Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thai cua » tai cuc, tri cua, dai cua
than cua » nhan cua, ban cua, gian cua
cac luc » cau luc, coc luc, cac nuoc
hieu ve » hieu va, hieu van
luc van » luoc van, luu van, duc van
tu bat » tu ban, tu dat
nang o » nang co, nang ho, nang ro
tu can » tu ban, tu cac, thu canh
ve cac » va cac, vien cac
o lai » o lao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bat) or (tu can)) ky nang o lai. hieu ve cac luc van thanh ((than cua) or (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bat) OR (tu can)) ky nang o lai. hieu ve cac luc van thanh ((than cua) OR (thai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((tu bat) or (tu can)) ky nang o lai. hieu ve cac luc van thanh ((than cua) or (thai cua)) tre*.