Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
va cham » va chat, va tham
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
su sach » so sach, vu sach
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc 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 ty xang xa hoi. hieu ((ve cam) or (va cham)) luc va ((thanh vi) OR (thanh ve)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. hieu ((ve cam) OR (va cham)) luc va ((thanh vi) OR (thanh ve)) su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. hieu ((ve cam) or (va cham)) luc va ((thanh vi) OR (thanh ve)) su triet*".