Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
va hang » van hang, va nang, va lang
ve cac » va cac, vien cac
ve cao » va cao, ve bao, ve co
y nang » ky nang, ly nang, v nang
me hoi » le hoi
cua su » qua su

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 nang ((me hoi) or (ma hoa)). hieu ((ve cao) OR (ve cac)) duc va hang tai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((me hoi) OR (ma hoa)). hieu ((ve cao) OR (ve cac)) duc va hang tai cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((me hoi) or (ma hoa)). hieu ((ve cao) OR (ve cac)) duc va hang tai cua su".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((me hoi) or (ma hoa)). hieu ((ve cao) OR (ve cac)) duc va hang tai cua su*.