Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
mai khoi » mai khoa, tai khoa, cac khoi
danh vai » danh sai, danh va, doanh van
cham xuc » cam xuc, chat xuc, cham soc
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
mai doi » moi doi, mai hoi, mai duoc
va danh » va dinh, va dan, va hanh
vai cau » va cau, van cau, vai cac
y nang » ky nang, ly nang, v nang

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 y nang ((mai doi) or (mai khoi)). hieu ve ((cham xuc) or (chao xu)) va danh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((mai doi) OR (mai khoi)). hieu ve ((cham xuc) OR (chao xu)) va danh vai cau tren.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((mai doi) or (mai khoi)). hieu ve ((cham xuc) or (chao xu)) va danh vai cau tren*.