Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
va danh » va dinh, va hanh, dia danh
cua tuc » cua duc, cua tu, cua thuoc
va dan » ca dan, va dao, va dau
cua su » qua su
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu van cam xuc ((va danh) or (va dan)) hai ((cua tuc) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu van cam xuc ((va danh) OR (va dan)) hai ((cua tuc) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu van cam xuc ((va danh) or (va dan)) hai ((cua tuc) or (cua su))*.