Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
va thanh » gia thanh, ban thanh, va tinh
sach thu » sach thue, sach thieu, sach tham
hanh da » hanh dao, hanh dua, hanh va
va hanh » van hanh, va danh, ban hanh
va tham » van tham, va cham, va thuat
nang xa » nang x, lang xa, nang ma
xuc va » duc va, tuc va, luc va
da su » dan su, dat su, va su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach y) OR (sach thu)) nang xa hoi. lieu ((va tham) OR (va thanh)) xuc va hanh da su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach y) or (sach thu)) nang xa hoi. lieu ((va tham) OR (va thanh)) xuc va hanh da su triet~".
• Adding a wildcard symbol may retrieve word variants: te ((sach y) or (sach thu)) nang xa hoi. lieu ((va tham) OR (va thanh)) xuc va hanh da su triet*.