Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cam thuc » am thuc, nam thuc, cam thu
van anh » van thanh, tuan anh
hieu ve » hieu va, hieu van
hoi hoi » hoi hoc, hoc hoi, hoi doi
xac ky » cac ky, sac ky, bac ky
ve cam » ve cham, ve cac, va cam
ho hoi » hoc hoi, hoa hoi, co hoi
pu xac » su xac
de va » de van, te va, ke va

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

• Performing a fuzzy search may retrieve terms with similar spellings: pu xac ky nang ((ho hoi) or (hoi hoi)). hieu ve cam thuc ((van anh) OR (van minh)) de va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: pu xac ky nang ((ho hoi) OR (hoi hoi)). hieu ve cam thuc ((van anh) OR (van minh)) de va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "pu xac ky nang ((ho hoi) or (hoi hoi)). hieu ve cam thuc ((van anh) OR (van minh)) de va triet*".