Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
chat xuc » chat huu, cam xuc, chao xu
van hanh » ban hanh, van anh, van ban
tu sach » thu sach, su sach, tu cach
hieu ve » hieu va, hieu van
cao hoi » cau hoi, co hoi, cao hoc
te sach » toc sach
ve chat » va chat, van chat
vi su » va su, ve su, ki su

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