Perhaps you should try some spelling variations:
cua van » cua ban, cua vat, cua dan
va hang » van hang, va nang, va lang
cam luc » cam xuc, cau luc
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, may nang
luc va » duc va, tuc va, loc va
v nang » va nang, vu nang, van nang
cua va » cua vat, chua va, vua va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((y nang) or (v nang)) xa hoi. hieu ve cam luc va hang ((cua va) OR (cua van)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((y nang) OR (v nang)) xa hoi. hieu ve cam luc va hang ((cua va) OR (cua van)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y nang) or (v nang)) xa hoi. hieu ve cam luc va hang ((cua va) OR (cua van)) triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) or (v nang)) xa hoi. hieu ve cam luc va hang ((cua va) OR (cua van)) triet*.