Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cac thuc » cach thuc, cac thu, can thuc
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
va thieu » va thiet, va hieu, va tieu
te sach » toc sach
ky dang » ky nang
ky danh » ky anh
van cac » van hac, van cau, van bac
vai va » mai va, dai va, hai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky dang) or (ky danh)) xa hoi. hieu van cac thuc van hanh vai va thieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dang) OR (ky danh)) xa hoi. hieu van cac thuc van hanh vai va thieu.
• Adding a wildcard symbol may retrieve word variants: te sach ((ky dang) or (ky danh)) xa hoi. hieu van cac thuc van hanh vai va thieu*.