Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
danh dau » lanh dao, hang dau, danh tu
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
cua tuc » cua duc, cua tu, cua thuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang xa hoi. ((hieu va) or (lieu va)) cam duc va danh dau ((cua triet) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. ((hieu va) OR (lieu va)) cam duc va danh dau ((cua triet) OR (cua tuc)).
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. ((hieu va) or (lieu va)) cam duc va danh dau ((cua triet) or (cua tuc))*.