Perhaps you should try some spelling variations:
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
sach ty » sach tu, sach thu, xach tay
ve cac » va cac, vien cac
va cua » va chua, via cua, ca cua
ve cao » va cao, ve bao, ve co
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ty) or (sach y)) nang x hoi. hieu ((ve cao) or (ve cac)) duc va hanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach y)) nang x hoi. hieu ((ve cao) OR (ve cac)) duc va hanh va cua te.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) or (sach y)) nang x hoi. hieu ((ve cao) or (ve cac)) duc va hanh va cua te*.