Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
tai cua » thai cua, tai cuc, tri cua
duc van » duc va, duc tan, duc manh
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
va cao » va cac, va co, va dao
co hoi » co hoc, co loi
y nang » ky nang, ly nang, v nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (nuoc sach)) y nang co hoi. hieu va cao ((duc van) or (suc manh)) hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (nuoc sach)) y nang co hoi. hieu va cao ((duc van) OR (suc manh)) hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (nuoc sach)) y nang co hoi. hieu va cao ((duc van) or (suc manh)) hanh tai cua te*.