Perhaps you should try some spelling variations:
thien van » thi van
tinh thai » sinh thai, tinh toan, tinh chat
thu sach » thuat sach, thuoc sach, thu hoach
thai cac » thoai cac, tai cac, khai cac
cac tren » ca tren, cau tren, rac tren
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
van lam » van nam
xuc va » tuc va, luc va, xac va

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 nang xa hoi. thien van lam ((xuc va) or (duc va)) tinh thai cac tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. thien van lam ((xuc va) OR (duc va)) tinh thai cac tren.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. thien van lam ((xuc va) or (duc va)) tinh thai cac tren*.