Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thai » ban than, ban thi, ban tai
cua tre » cua te, cuu tre, dua tren
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
tu sach » thu sach, su sach, te sach
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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 (vu sach)) ky nang o hoi. hieu ve cac xuc van ban thai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) ky nang o hoi. hieu ve cac xuc van ban thai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ky nang o hoi. hieu ve cac xuc van ban thai ((cua tre) or (cua triet))*.