Perhaps you should try some spelling variations:
thien van » thi van
thanh van » thanh san, thanh toan, thanh phan
nam luoc » nam duoc, nam buoc, nam quoc
va thanh » gia thanh, ban thanh, va tinh
va triet » va trien, ve triet, cua triet
cao hoi » cau hoi, co hoi, tao hoi
cao hoc » co hoc, cho hoc, chat hoc
luoc va » nuoc va, duoc va, loc va
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang ((cao hoi) or (cao hoc)). thien van nam luoc va thanh van ((va triet) OR (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ((cao hoi) OR (cao hoc)). thien van nam luoc va thanh van ((va triet) OR (va thiet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang ((cao hoi) or (cao hoc)). thien van nam luoc va thanh van ((va triet) OR (va thiet))".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang ((cao hoi) or (cao hoc)). thien van nam luoc va thanh van ((va triet) OR (va thiet))*.