Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
duoc anh » duc anh, nuoc anh, quoc anh
lam duoc » nam duoc, luat duoc, lam thuoc
tuan do » toan do, truan doi, quan doi
su sach » so sach, vu sach
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
va lam » van lam, va lap

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