Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
hanh tai » thanh tai, han tai, hinh tai
hang tai » hang va, dung tai
su triet » su viet, su tien, ve triet
va triet » va thiet, va trien, ve triet
hieu ve » hieu va, hieu van
x hoi » xa hoi, o hoi, x ho
ve am » va am

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

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