Perhaps you should try some spelling variations:
sach tri » sach tai, sach tren, sach truc
tri nang » thi nang, tra nang, tri bang
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
doi cua » dai cua, hoi cua
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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 tri nang x hoi. hieu ve cham ((xuc van) OR (xuc ban)) hanh ((vi cua) or (doi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tri nang x hoi. hieu ve cham ((xuc van) OR (xuc ban)) hanh ((vi cua) OR (doi cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tri nang x hoi. hieu ve cham ((xuc van) OR (xuc ban)) hanh ((vi cua) or (doi cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach tri nang x hoi. hieu ve cham ((xuc van) OR (xuc ban)) hanh ((vi cua) or (doi cua)) triet*.