Perhaps you should try some spelling variations:
vuc nang » cuc nang, chuc nang, van nang
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
vu nang » va nang, vu dang, v nang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
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) OR (vuc nang)) x ho. hieu ve cham xuc ((van ban) or (ban hanh)) ve su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((vu nang) OR (vuc nang)) x ho. hieu ve cham xuc ((van ban) OR (ban hanh)) ve su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((vu nang) OR (vuc nang)) x ho. hieu ve cham xuc ((van ban) or (ban hanh)) ve su triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((vu nang) OR (vuc nang)) x ho. hieu ve cham xuc ((van ban) or (ban hanh)) ve su triet*.