Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham duc » pham duc, cham soc, pham duy
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
dua tren » dung tren
te sach » toc sach
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
cua tre » cuu tre, cua triet, cua thep
y nang » ky nang, ly nang, v nang
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: te sach y nang xa hoi. hieu qua cham duc van hanh lai ((((cua tre) or (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu qua cham duc van hanh lai ((((cua tre) OR (dua tren))) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu qua cham duc van hanh lai ((((cua tre) or (dua tren))) or (cua te))*.