Perhaps you should try some spelling variations:
sach tri » sach tai, sach tren, sach truc
tri nang » thi nang, tra nang, tri bang
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van anh
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
doi cua » dai cua, hoi cua
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, 5 hoi

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) OR (x ho)). hieu ve cham xuc van 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) OR (x ho)). hieu ve cham xuc van 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) OR (x ho)). hieu ve cham xuc van hanh ((vi cua) or (doi cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach tri nang ((x hoi) OR (x ho)). hieu ve cham xuc van hanh ((vi cua) or (doi cua)) triet*.