Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
dang xay » dang van, van xay
va hanh » van hanh, va thanh, va danh
nang ma » tang ma, sang ma, nang cao
cac xuc » cac nuoc, chat xuc, cac cuoc
vi cua » vai cua, di cua
vu san » va san, vu ban
san ky » sang ky, van ky, dan ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu san ky ((dang xay) or (nang ma)) hoi. hieu vien ((cac xuc) OR (cam xuc)) va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky ((dang xay) OR (nang ma)) hoi. hieu vien ((cac xuc) OR (cam xuc)) va hanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu san ky ((dang xay) or (nang ma)) hoi. hieu vien ((cac xuc) OR (cam xuc)) va hanh vi cua te*".