Perhaps you should try some spelling variations:
ban banh » ban hanh, ban anh, ban danh
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
cac cuc » cac cuoc, cac cua, cac nuoc
cuc ban » cua ban, cac ban, cuu ban
banh de » hanh de, banh keo, thanh de
cua tuc » cua duc, cua tu, cua thuoc
de cua » le cua, te cua, dieu 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 (su sach)) ky nang ((x ho) or (xa hoi)). hieu va cac cuc ban banh de cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ((x ho) OR (xa hoi)). hieu va cac cuc ban banh de cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang ((x ho) or (xa hoi)). hieu va cac cuc ban banh de cua tuc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang ((x ho) or (xa hoi)). hieu va cac cuc ban banh de cua tuc*.