Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham tuc » nham thuc, pham thuc, tham thuc
thu sach » thuat sach, thuoc sach, thu hoach
thi nang » thi cong, ki nang, thi hanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
tuc van » thuc van, truc van, tuc va
tu sach » su sach, te sach, tu cach
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
ve cham » va cham, ve chat, vu cham

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) thi nang xa hoi. hieu ve cham tuc van hanh ((vai cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) thi nang xa hoi. hieu ve cham tuc van hanh ((vai cua) OR (lai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) thi nang xa hoi. hieu ve cham tuc van hanh ((vai cua) or (lai cua)) triet*.