Perhaps you should try some spelling variations:
bai viet » mai viet, tai viet, bac viet
hanh va » hang va, hanh vi
hieu vu » hieu va, hieu ve, hieu su
te sach » toc sach
mang xa » lang xa, mang may, dang xay
vu cham » va cham, vu kham, tu cham
tuc va » thuc va, truc va, tuc xa
loc va » hoc va, luc va

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 y ((mang xa) or (nang x)) hoi. hieu vu cham ((tuc va) or (loc va)) hanh va bai viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((mang xa) OR (nang x)) hoi. hieu vu cham ((tuc va) OR (loc va)) hanh va bai viet.
• Adding a wildcard symbol may retrieve word variants: te sach y ((mang xa) or (nang x)) hoi. hieu vu cham ((tuc va) or (loc va)) hanh va bai viet*.