Perhaps you should try some spelling variations:
tang thai » trang thai, tang tai, tang thi
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
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 cam » va cac, va cao, va cai

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 cam) OR (va cham)) 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 cam) OR (va cham)) thue va tang thai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. lieu ((va cam) OR (va cham)) 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 cam) OR (va cham)) thue va tang thai ((cua tre) or (cua triet))*.