Perhaps you should try some spelling variations:
thien van » thi van
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
dinh te » kinh te, dich te, dinh ve
va dinh » van dinh, va kinh, va tinh
lam xuc » cam xuc, lam duoc
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
te cua » tue cua, le cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky tang xa hoi. ((lieu va) or (thien van)) lam xuc va dinh te cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky tang xa hoi. ((lieu va) OR (thien van)) lam xuc va dinh te cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky tang xa hoi. ((lieu va) or (thien van)) lam xuc va dinh te cua tre*.