Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
doi cua » dai cua, hoi cua
va tinh » may tinh
hieu he » hieu ve, hiem he, hieu le
thuc va » thuc vat, thuc dan, thuc day
di cua » dai cua, de cua, do cua
he nam » ha nam, nghe nam
nang o » nang co, nang ho, nang ro
vu san » va san, vu ban
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu tai) or (vu san)) ky nang o hoi. hieu he nam thuc va tinh ((di cua) or (doi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu tai) OR (vu san)) ky nang o hoi. hieu he nam thuc va tinh ((di cua) OR (doi cua)) te.
• Adding a wildcard symbol may retrieve word variants: ((tu tai) or (vu san)) ky nang o hoi. hieu he nam thuc va tinh ((di cua) or (doi cua)) te*.