Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hanh thai » nhanh thai, hinh thai, hanh tai
hieu vien » hieu viec, thieu nien, hieu tieng
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
tu sac » tu sach, tu cac, tu bac
nang o » nang co, nang ho, nang ro
tu san » thu san, tu ban, tu can
cua te » cua tu
o lai » o lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu san)) ky nang o lai. ((hieu vien) OR (hieu hien)) cac xuc van hanh thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang o lai. ((hieu vien) OR (hieu hien)) cac xuc van hanh thai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu san)) ky nang o lai. ((hieu vien) OR (hieu hien)) cac xuc van hanh thai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky nang o lai. ((hieu vien) OR (hieu hien)) cac xuc van hanh thai cua te*.