Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
xuc ban » duc ban, cuc ban, quoc ban
cao xuc » cam xuc, cao duc, cao suc
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
va cao » va cac, va co, va dao
tu san » thu san, tu ban, tu can
vi cua » di cua

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) or (tu san)) ky nang ma hoi. hieu va cao xuc ban hanh ((vi cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (tu san)) ky nang ma hoi. hieu va cao xuc ban hanh ((vi cua) OR (vai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (tu san)) ky nang ma hoi. hieu va cao xuc ban hanh ((vi cua) or (vai cua)) tre*.