Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien cac » thien cac, vien cac, hieu cac
tu sach » thu sach, su sach, te sach
so sach » so sanh, bo sach, co sach
cac tuc » cac toc, cac tu, cac tac
xa danh » va danh, dia danh, nam danh
danh vi » hanh vi, dinh vi, danh di
luu tre » luu tru, cuu tre, luy tre
vi luu » vi lua
x hoi » xa hoi, o hoi, 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 (so sach)) ky nang ((x hoi) or (x ho)). hieu hien cac tuc xa danh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky nang ((x hoi) OR (x ho)). hieu hien cac tuc xa danh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky nang ((x hoi) or (x ho)). hieu hien cac tuc xa danh vi luu tre*.