Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nam thuc » nam thuoc, am thuc, nam thu
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
hoi hoi » hoi hoc, hoi doi, doi hoi
hoc hoi » hoc khoi, hoc hoa, hoc noi
hieu ve » hieu va, hieu van
hanh ve » hanh vi, hanh va, hanh kem
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
ho hoi » hoa hoi, co hoi, o hoi
ve cua » le cua, de cua, te cua
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ((((ho hoi) OR (hoi hoi))) or (hoc hoi)). hieu ve nam thuc van hanh ve cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ((((ho hoi) OR (hoi hoi))) OR (hoc hoi)). hieu ve nam thuc van hanh ve cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang ((((ho hoi) OR (hoi hoi))) or (hoc hoi)). hieu ve nam thuc van hanh ve cua viet*".