Perhaps you should try some spelling variations:
manh nhanh » anh nhan, danh thanh, cach nhanh
danh nhan » doanh nhan, thanh nhan, benh nhan
chau tren » cau tren, chay tren, cu tren
thu sach » tu sach, thuat sach, thuoc sach
hai chau » lai chau, ha chau, hat chau
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
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: thu sach y nang ((x hoi) or (x ho)). hieu ve cam duc ((manh nhanh) OR (danh nhan)) hai chau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((x hoi) OR (x ho)). hieu ve cam duc ((manh nhanh) OR (danh nhan)) hai chau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ((x hoi) or (x ho)). hieu ve cam duc ((manh nhanh) OR (danh nhan)) hai chau tren".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((x hoi) or (x ho)). hieu ve cam duc ((manh nhanh) OR (danh nhan)) hai chau tren*.