Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cam thuc » am thuc, nam thuc, cam thu
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
hieu ve » hieu van
hieu va » lieu va, hieu qua
su sai » su tai, su hai, su dai
sai ky » sac ky
x hoi » xa hoi, o hoi, x ho

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

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