Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
va danh » va dinh, va dan, va hanh
ky sang » ky nang, ky dang, duy sang
hoi cua » hoi chuc
ky tang » ky nang, ky dang, kho tang
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
ve cac » va cac, vien cac
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky sang) OR (ky tang)) mai hoi. hieu ve cac xuc ((ban hanh) or (va danh)) hoi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky sang) OR (ky tang)) mai hoi. hieu ve cac xuc ((ban hanh) OR (va danh)) hoi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) OR (ky tang)) mai hoi. hieu ve cac xuc ((ban hanh) or (va danh)) hoi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) OR (ky tang)) mai hoi. hieu ve cac xuc ((ban hanh) or (va danh)) hoi cua te*.