Perhaps you should try some spelling variations:
thanh ty » thanh tay, thanh ky, thanh tu
bach ky » bac ky
hieu va » lieu va, hieu qua
thuc va » thuc dan, thuc day
nang o » nang co, nang ho, nang ro
va cao » va cac, va co, va dao
ty cua » tay cua, ly cua, ky cua
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 bach ky nang o hoi. hieu va cao ((thuc va) or (thuc vat)) thanh ty cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky nang o hoi. hieu va cao ((thuc va) OR (thuc vat)) thanh ty cua te.
• Adding a wildcard symbol may retrieve word variants: vu bach ky nang o hoi. hieu va cao ((thuc va) or (thuc vat)) thanh ty cua te*.