Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cau thuc » cau truc, cuu thuc, can thuc
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hanh ky » hanh kem
vu hanh » vu khanh, vu thanh, du hanh
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky nang, ky dang, ky tang
hieu ke » hieu kem, chieu ke, hieu ky
ke cau » ket cau
ha hoi » ha noi, xa hoi, va hoi

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

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