Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu sac » thu sach, thu san, thu xac
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
ve cao » ve bao, ve cac, ve co
va cao » va cac, va co, va dao
di cua » dai cua, doi cua, de cua
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: thu sac ky nang xa hoi. hieu ((ve cao) or (va cao)) duc ((va hanh) or (ban thanh)) di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang xa hoi. hieu ((ve cao) OR (va cao)) duc ((va hanh) OR (ban thanh)) di cua su.
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang xa hoi. hieu ((ve cao) or (va cao)) duc ((va hanh) or (ban thanh)) di cua su*.