Perhaps you should try some spelling variations:
toan thanh » tran thanh, hoan thanh, toan thang
cham duc » pham duc, cham soc, pham duy
duc toan » duc tan, duc ton, duc hoan
thanh vi » hanh vi, thanh va, thanh ve
dua tren » dung tren
cua tre » cuu tre, cua triet, cua thep
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky tang xa hoi. hieu ve cham duc toan thanh vi ((((cua tre) or (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang xa hoi. hieu ve cham duc toan thanh vi ((((cua tre) OR (dua tren))) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu san ky tang xa hoi. hieu ve cham duc toan thanh vi ((((cua tre) or (dua tren))) or (cua te))*.