Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
va triet » va thiet, va trien, ve triet
nang ho » nang hoc, nang co, tang ho
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ca viet » va viet, co viet, hoa viet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ho hoi » hoc hoi, hoa hoi, hoi hoi
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 sac ky nang ho hoi. hieu ve am thuc va hanh dai ((va triet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ho hoi. hieu ve am thuc va hanh dai ((va triet) OR (ca viet))*.