Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
tham soc » cham soc, tham nuoc, thai son
tang ma » mang may, tang van
va tham » van tham, va cham, va thanh
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
sang ma » nang ma, sang tao, mang may
su sach » so sach, vu sach
soc va » hoc va, loc va, doc va

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 ((sang ma) OR (tang ma)) hoi. lieu va tham soc va danh vi ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((sang ma) OR (tang ma)) hoi. lieu va tham soc va danh vi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((sang ma) OR (tang ma)) hoi. lieu va tham soc va danh vi ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: su sach y ((sang ma) OR (tang ma)) hoi. lieu va tham soc va danh vi ((cua triet) or (va triet))*.