Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » thanh va, thanh ve, nhanh vi
vu khach » vu khanh, vu khac, vay khach
thuc day » thuc dan, thuc vat
hieu ve » hieu va, hieu van
ve nam » he nam, va nam, le nam
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
cua te » cua tu
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: vu khach y nang o hoi. hieu ve nam thuc day ((thanh vi) or (hanh vi)) ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach y nang o hoi. hieu ve nam thuc day ((thanh vi) OR (hanh vi)) ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: vu khach y nang o hoi. hieu ve nam thuc day ((thanh vi) or (hanh vi)) ((cua te) or (cua triet))*.