Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
vat dung » van dung, viet dung, mat duong
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
va dung » van dung, va duong, va ung
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 ky nang xa hoi. hieu van cam tuc ((va dung) OR (vat dung)) co ((cua te) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van cam tuc ((va dung) OR (vat dung)) co ((cua te) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van cam tuc ((va dung) OR (vat dung)) co ((cua te) or (cua tre))*".