Perhaps you should try some spelling variations:
cham cuc » cham cuu, pham cuc, pham chuc
hieu va » lieu va, hieu qua
ban anh » ban hanh, ban banh, ban danh
cuc ban » cua ban, cac ban, cuu ban
va cham » va chat, va tham
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
anh de » hanh de, anh d, anh ve
de cua » le cua, te cua, dieu cua
cua te » cua tu
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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 hoi) OR (o hoi)). hieu va cham cuc ban anh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ((x hoi) OR (o hoi)). hieu va cham cuc ban anh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang ((x hoi) OR (o hoi)). hieu va cham cuc ban anh de cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang ((x hoi) OR (o hoi)). hieu va cham cuc ban anh de cua te*.