Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
van thanh » ban thanh, van tuan
chat xuc » chat huu, cam xuc, chao xu
van hanh » ban hanh, van anh, van ban
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
hieu ve » hieu van
cao hoi » cau hoi, co hoi, cao hoc
y nang » ky nang, ly nang, v nang
ve cau » ke cau, va cau, ve cac

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 y nang cao hoi. ((hieu ve) OR (hieu va)) chat xuc ((van hanh) or (van thanh)) ve cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang cao hoi. ((hieu ve) OR (hieu va)) chat xuc ((van hanh) OR (van thanh)) ve cau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang cao hoi. ((hieu ve) OR (hieu va)) chat xuc ((van hanh) or (van thanh)) ve cau triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang cao hoi. ((hieu ve) OR (hieu va)) chat xuc ((van hanh) or (van thanh)) ve cau triet*.