Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cao hoi » cau hoi, co hoi, cao hoc
va hanh » van hanh, va thanh, va danh
va dinh » van dinh, va kinh, va tinh
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
van am » van nam, van lam, van dam
di cua » dai cua, doi cua, de 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: vu sac ky nang cao hoi. hieu van am thuc ((va hanh) or (va dinh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang cao hoi. hieu van am thuc ((va hanh) OR (va dinh)) di cua te.
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang cao hoi. hieu van am thuc ((va hanh) or (va dinh)) di cua te*.