Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang

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

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