Perhaps you should try some spelling variations:
dua tren » dung tren
dinh dat » dinh ket, dinh van, dinh lam
chau phu » chau phi, chau au, chau tho
tu sach » thu sach, su sach, tu cach
vu dinh » quy dinh
ve chau » ve cau, ve chat, le chau
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
phu vu » phuc vu, phu nu, khu vu

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 (te sach)) ky tang xa hoi. hieu ve chau phu vu dinh dat ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky tang xa hoi. hieu ve chau phu vu dinh dat ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky tang xa hoi. hieu ve chau phu vu dinh dat ((dua tren) or (cuu tre))*.