Perhaps you should try some spelling variations:
nhan duoc » nhan cuoc, nhan quoc, phan duoc
nhan duc » nhan luc, phan duc, than duc
hanh dai » hanh tai, hanh dao, vanh dai
su sach » vu sach
so sach » so sanh, bo sach, co sach
va hanh » van hanh, va thanh, va danh
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ky nang x hoi. hieu qua ((nhan duc) OR (nhan duoc)) va hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang x hoi. hieu qua ((nhan duc) OR (nhan duoc)) va hanh dai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky nang x hoi. hieu qua ((nhan duc) OR (nhan duoc)) va hanh dai cua te*".