Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
xuc ngan » luc ngan, luc nganh, vu ngan
cham xuc » cam xuc, chat xuc, cham soc
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ve cham » va cham, ve chat, vu cham
vi cau » ve cau, di cau, viet cau
va cau » van cau, va cac, va dau
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 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: thu sach ty nang ((x hoi) OR (o hoi)). hieu ve cham xuc ngan hang ((vi cau) or (va cau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((x hoi) OR (o hoi)). hieu ve cham xuc ngan hang ((vi cau) OR (va cau)) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((x hoi) OR (o hoi)). hieu ve cham xuc ngan hang ((vi cau) or (va cau)) tren".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((x hoi) OR (o hoi)). hieu ve cham xuc ngan hang ((vi cau) or (va cau)) tren*.