Perhaps you should try some spelling variations:
van nang » van quang, van ban, van dung
ban hanh » ban hang
su triet » su viet, su tien, ve triet
te sach » toc sach
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
ve cam » ve cham, ve cac, va cam
ki su » ky su

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