Perhaps you should try some spelling variations:
"labor force participation in a developing metropolitan:" » "labor force participation in a developing metropolis:" (Expand Search), "labor force participation in _ developing metropolitan:" (Expand Search), "labour force participation in a developing metropolitan:" (Expand Search)
"major social participation in a developing metropolitan:" » "major social participation in a developing metropolis:" (Expand Search), "major political participation in a developing metropolitan:" (Expand Search), "major social stratification in a developing metropolitan:" (Expand Search), "major social participation in _ developing metropolitan:" (Expand Search), "paper social participation in a developing metropolitan:" (Expand Search), "war social participation in a developing metropolitan:" (Expand Search)

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