Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van hanh » van thanh, ban hanh, van ban
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
cac xuc » cac nuoc, chat xuc, cac cuoc
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
van anh » van thanh, tuan anh, van minh
co hoi » co hoc, co loi
ve cau » ke cau, va cau, ve cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang co hoi. hieu ve ((cac xuc) or (cam xuc)) ((van hanh) OR (van anh)) ve cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang co hoi. hieu ve ((cac xuc) OR (cam xuc)) ((van hanh) OR (van anh)) ve cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang co hoi. hieu ve ((cac xuc) or (cam xuc)) ((van hanh) OR (van anh)) ve cau tren*".