Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
cau tren » dau tren, ca tren, cau treo
danh vai » danh sai, danh va, doanh van
mai khoi » mai khoa, tai khoa, cac khoi
va danh » va dinh, va dan, va hanh
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
mai hoi » dai hoi, lai hoi, mai doi
cu tren » tu tren, dua tren
xuc va » duc va, tuc va, luc va

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 ky nang ((mai hoi) or (mai khoi)). hieu ve cham xuc va danh vai ((cau tren) OR (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((mai hoi) OR (mai khoi)). hieu ve cham xuc va danh vai ((cau tren) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((mai hoi) or (mai khoi)). hieu ve cham xuc va danh vai ((cau tren) OR (cu tren))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((mai hoi) or (mai khoi)). hieu ve cham xuc va danh vai ((cau tren) OR (cu tren))*.