Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
doc sach » hoc sach, toc sach, nuoc sach
hien cac » thien cac, vien cac, hieu cac
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tuc » cua duc, cua tu, cua thuoc
cac lo » cac lop, cac co, cac bo
lo va » lo van, lao va, ly va

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 (doc sach)) ky nang xa hoi. hieu hien cac lo va hanh vai cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (doc sach)) ky nang xa hoi. hieu hien cac lo va hanh vai cua tuc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (doc sach)) ky nang xa hoi. hieu hien cac lo va hanh vai cua tuc*.