Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
xang o » lang o, tang o, dang o
ve cam » ve cham, ve cac, va cam
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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 ty xang o hoi. hieu ve cam ((luc va) or (tuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang o hoi. hieu ve cam ((luc va) OR (tuc va)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ty xang o hoi. hieu ve cam ((luc va) or (tuc va)) hanh vi cua te*.