Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
sach thu » sach thue, sach thieu, sach tham
hanh hai » thanh hai, nhanh hai, hang hai
va hanh » van hanh, va thanh, va danh
cac tuc » cac toc, cac tu, cac tac
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
mang xa » mang may, dang xay, mang cua
cua tuc » cua duc, cua thuoc, luat tuc
tuc va » thuc va, truc va, tuc xa
cua tu » cua su, cua cu, cua te

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thu ((mang xa) or (lang xa)) hoi. hieu viec cac tuc va hanh hai ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu ((mang xa) OR (lang xa)) hoi. hieu viec cac tuc va hanh hai ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu ((mang xa) or (lang xa)) hoi. hieu viec cac tuc va hanh hai ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: su sach thu ((mang xa) or (lang xa)) hoi. hieu viec cac tuc va hanh hai ((cua tu) OR (cua tuc))*.