Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van anh
hoc khoi » hoc khoa, hoc hoa, hoc noi
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
hanh te » hanh tu, hanh ve, hanh de
ho hoi » hoc hoi, hoa hoi, hoi hoi
su xac » pu xac, su cac
va cam » va cham, va cac, va cao
te cua » tue cua, le cua, de cua
su sac » su sach, su cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) OR (su xac)) ky nang ((ho hoi) or (hoc khoi)). hieu va cam tuc van hanh te cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky nang ((ho hoi) OR (hoc khoi)). hieu va cam tuc van hanh te cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su xac)) ky nang ((ho hoi) or (hoc khoi)). hieu va cam tuc van hanh te cua viet*".