Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
te sach » toc sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
dan hai » doan hai, dang hai, dan khai
hai cua » thai cua, dai cua, hoi cua
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau

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 lang) OR (ky tang)) xa hoi. hieu va cac tuc va dan hai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) OR (ky tang)) xa hoi. hieu va cac tuc va dan hai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) OR (ky tang)) xa hoi. hieu va cac tuc va dan hai cua triet*.