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

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 (luc va)) hanh va mai 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 (luc va)) hanh va mai viet.
• Adding a wildcard symbol may retrieve word variants: te sach y ((mang xa) or (nang x)) hoi. hieu vu cham ((tuc va) or (luc va)) hanh va mai viet*.