Perhaps you should try some spelling variations:
thien van » thi van
su triet » su viet, su tien, ve triet
van cham » van chat, van tham, va cham
hanh ki » hanh vi, hanh ky, hanh kien
sach v » sach va, sach 2, sach vay
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho
ki su » ky 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 v) OR (sach y)) nang x hoi. thien van cham ((xuc va) OR (tuc va)) hanh ki su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach y)) nang x hoi. thien van cham ((xuc va) OR (tuc va)) hanh ki su triet~".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach y)) nang x hoi. thien van cham ((xuc va) OR (tuc va)) hanh ki su triet*.