Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
manh hanh » xanh hanh, danh thanh, minh thanh
viec cac » vien cac, viec cua, viec lam
sach thu » sach thue, sach thieu, sach tham
sach ty » sach y, sach tu, xach tay
cac suc » cao suc, cac nuoc, cac cuoc
va chua » vua chua, ca chua, va chu
va cua » via cua, ca cua, ma cua
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 ty) or (sach thu)) nang x hoi. hieu viec cac suc manh hanh ((va cua) or (va chua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang x hoi. hieu viec cac suc manh hanh ((va cua) OR (va chua)) tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thu)) nang x hoi. hieu viec cac suc manh hanh ((va cua) or (va chua)) tre*.