Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
su sach » so sach, vu sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
su viet » so viet
ve su » va su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach vu nang x ho. hieu ve cham xuc ((van ban) or (ban hanh)) ve su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach vu nang x ho. hieu ve cham xuc ((van ban) OR (ban hanh)) ve su viet.
• Adding a wildcard symbol may retrieve word variants: su sach vu nang x ho. hieu ve cham xuc ((van ban) or (ban hanh)) ve su viet*.