Perhaps you should try some spelling variations:
te sach » toc sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ca viet » va viet, co viet, hoa viet
mang xa » lang xa, mang may, dang xay
tuc va » thuc va, truc va, tuc xa
luc va » duc va, loc va
vi ca » vit ca, li ca, va ca

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