Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hang xa » hoang xa, hang ca, lang xa
hieu va » lieu va, hieu qua
va cao » va cac, va co, va dao
su van » tu van, vu van
vi cua » vai cua, di cua
cua te » cua tu

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 ((hang xa) or (hang va)) hoi. hieu va cao su van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((hang xa) OR (hang va)) hoi. hieu va cao su van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((hang xa) or (hang va)) hoi. hieu va cao su van hanh vi cua te*.