Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
tham luc » than luc, tham nuoc, tham thuc
sach ty » sach y, sach tu, sach thu
luc gia » luoc gia, duc gia, quoc gia
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
ty hang » ly hang, ty xang, thi hang
va tham » van tham, va cham, va thanh
ma hoi » mai hoi, ma hoa, me hoi

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 ty hang ((ma hoi) or (xa hoi)). hieu va tham luc gia thanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty hang ((ma hoi) OR (xa hoi)). hieu va tham luc gia thanh vi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty hang ((ma hoi) or (xa hoi)). hieu va tham luc gia thanh vi ((cua triet) or (su triet))*.