Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
cau thuc » cau truc, cuu thuc, can thuc
hang cho » sang cho, hang khoa, phong cho
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
van cau » van dau, van hau, van chat
lang co » lang o, nang co, tang co
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((lang co) or (hang cho)) hoi. hieu van cau thuc va hanh vi ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((lang co) OR (hang cho)) hoi. hieu van cau thuc va hanh vi ((cua triet) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((lang co) or (hang cho)) hoi. hieu van cau thuc va hanh vi ((cua triet) or (cua te))*.