Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
nang dau » hang dau, xang dau, nang du
vien cac » vien bach, vien dai, vien da
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
dau hoi » cau hoi, dai hoi, dan hoi
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
hang de » hoang de, hanh de, hang di
cua tuc » cua duc, cua tu, cua thuoc
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ly nang dau hoi. hieu vien cac ((xuc van) or (luc van)) hang de cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang dau hoi. hieu vien cac ((xuc van) OR (luc van)) hang de cua tuc.
• Adding a wildcard symbol may retrieve word variants: te sach ly nang dau hoi. hieu vien cac ((xuc van) or (luc van)) hang de cua tuc*.