Perhaps you should try some spelling variations:
sach tren » sach tien, sach tranh
van hanh » van thanh, ban hanh, van anh
sach tri » sach tai, sach truc, sach bai
xuc van » duc van, luc van, vuc van
doi cua » dai cua, hoi cua
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
di cua » dai cua, de cua, do cua
x hoi » xa hoi, o hoi, x ho

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: su ((sach tri) OR (sach tren)) nang x hoi. hieu ve cam xuc van hanh ((di cua) OR (doi cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach tri) OR (sach tren)) nang x hoi. hieu ve cam xuc van hanh ((di cua) or (doi cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: su ((sach tri) OR (sach tren)) nang x hoi. hieu ve cam xuc van hanh ((di cua) or (doi cua)) triet*.