Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
dao cua » dai cua, day cua, do cua
dan cua » dan ca, ban cua, dai cua
tu can » tu ban, tu cac, thu canh
can ky » van ky, dan ky, ban ky
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ky nang o hoi. hieu ve am thuc va danh ((dao cua) or (dan cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky nang o hoi. hieu ve am thuc va danh ((dao cua) OR (dan cua)) viet.
• Adding a wildcard symbol may retrieve word variants: tu can ky nang o hoi. hieu ve am thuc va danh ((dao cua) or (dan cua)) viet*.