Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
hieu vien » hieu hien, thieu nien, hieu tieng
ban hang » ngan hang
vai cua » hai cua, lai cua, bai cua
dua ban » dia ban, cua ban, qua ban
cac dua » cach dua, cac qua, cac du
te sach » toc sach
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
x hoi » xa hoi, o hoi, x ho

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