Perhaps you should try some spelling variations:
dinh dao » dinh dat, minh dao, dinh cao
su sach » so sach, vu sach
dao cuu » dao huu, dao cau, dao chu
chuc va » thuc va, thuc vat
phuc va » phuc vu, thuc va, thuc vat
cuu tre » cua tre, cau tren, cau treo
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
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (te sach)) ky tang xa hoi. hieu ve cau ((phuc va) OR (chuc va)) dinh dao cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky tang xa hoi. hieu ve cau ((phuc va) OR (chuc va)) dinh dao cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ky tang xa hoi. hieu ve cau ((phuc va) OR (chuc va)) dinh dao cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky tang xa hoi. hieu ve cau ((phuc va) OR (chuc va)) dinh dao cuu tre*.