Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tang thai » trang thai, tang tai, tang thi
thu sach » tu sach, thuat sach, thuoc sach
nam thue » nam thu, nam thuc, lam thue
nang xa » nang x, lang xa, nang ma
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
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang xa hoi. lieu va nam thue va tang thai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. lieu va nam thue va tang thai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. lieu va nam thue va tang thai ((cua tre) or (cua triet))*.