Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cam thue » cam thu, lam thue, nam thue
tang tai » hang tai, dung tai, sang tao
te sach » toc sach
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
thue va » thuc va, thuyet va, thuc vat
va tang » va trang, van tang, ha tang
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang

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 cam thue va tang tai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu qua cam thue va tang tai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu qua cam thue va tang tai ((cua tre) or (cua triet))*.