Perhaps you should try some spelling variations:
sang mai » sang ma, sang tai, lang mai
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, ky tang
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
hoi cua » hoi chuc
cac xuc » cac nuoc, chat xuc, cac cuoc
sach ky » sac ky, sach y, sach ty
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 mai hoi. hieu ve ((cac xuc) OR (cam 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 mai hoi. hieu ve ((cac xuc) OR (cam 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 mai hoi. hieu ve ((cac xuc) OR (cam xuc)) ((ban hanh) or (va danh)) hoi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang mai hoi. hieu ve ((cac xuc) OR (cam xuc)) ((ban hanh) or (va danh)) hoi cua te*.