Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
nang ho » nang hoc, nang co, tang ho
ho hoi » hoc hoi, hoa hoi, hoi hoi
su cac » tu cac, su cao, su can

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

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