Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
va triet » va thiet, va trien, ve triet
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
viec cac » vien cac, viec cua, viec lam
dang xay » dang van, van xay
sach ky » sac ky, sach y, sach ty
cac tuc » cac toc, cac tu, cac tac
tuc van » thuc van, truc van, tuc va
dang xa » lang xa, dang ha, dang va
su sach » so sach, vu sach
dai va » mai va

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 ky ((dang xa) OR (dang xay)) hoi. hieu viec cac tuc van hanh dai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((dang xa) OR (dang xay)) hoi. hieu viec cac tuc van hanh dai va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((dang xa) OR (dang xay)) hoi. hieu viec cac tuc van hanh dai va triet*.