Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
nang mai » nang ma, nang tai, lang mai
vien dai » hien dai
te sach » toc sach
vai cua » hai cua, lai cua, bai cua
dai xuc » dai xu, dai luoc, dai thuc
xuc van » duc van, luc van, vuc van
sach ly » sach y, sach lo, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ky nang, ly hang, ly vang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang mai hoi. hieu vien dai xuc van minh ((vai cuu) OR (((vai cua) OR (dai cua)))) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang mai hoi. hieu vien dai xuc van minh ((vai cuu) or (((vai cua) OR (dai cua)))) tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang mai hoi. hieu vien dai xuc van minh ((vai cuu) or (((vai cua) OR (dai cua)))) tre*.