Perhaps you should try some spelling variations:
sach tri » sach tai, sach tren, sach truc
tri nang » thi nang, tra nang, tri bang
van hanh » van thanh, ban hanh, van ban
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
ve cam » ve cham, ve cac, va cam
di cua » doi 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: vu sach tri nang x hoi. hieu ve cam xuc ((van hanh) OR (van anh)) ((di cua) OR (dai cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach tri nang x hoi. hieu ve cam xuc ((van hanh) OR (van anh)) ((di cua) or (dai cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: vu sach tri nang x hoi. hieu ve cam xuc ((van hanh) OR (van anh)) ((di cua) or (dai cua)) triet*.