Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh dai » hanh tai, hanh dao, vanh dai
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cuc ban » cua ban, cac ban, cuu ban
dai cau » dat cau, da cau, dai hau
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao

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 y nang xa hoi. hieu ((ve cam) or (((va cam) or (va cao)))) cuc ban hanh dai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve cam) OR (((va cam) OR (va cao)))) cuc ban hanh dai cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve cam) or (((va cam) or (va cao)))) cuc ban hanh dai cau tren*.