Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nam thuc » nam thuoc, am thuc, nam thu
hanh voi » hanh vi, hanh noi, hanh moi
van hanh » van thanh, ban hanh, van anh
cam tuc » cam xuc, cam tu, dam thuc
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
voi su » voi suc, oi su, vi su
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (so sach)) ky nang x hoi. hieu ve ((cam tuc) OR (nam thuc)) van hanh voi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (so sach)) ky nang x hoi. hieu ve ((cam tuc) OR (nam thuc)) van hanh voi su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu bach) or (so sach)) ky nang x hoi. hieu ve ((cam tuc) OR (nam thuc)) van hanh voi su triet*".