Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lam » thanh lap, hanh lam, thanh nam
va trien » va truyen, va thiet, va tuyen
va thanh » gia thanh, ban thanh, va tinh
cac xuc » cam xuc, cac nuoc, chat xuc
su sach » vu sach
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
xuc va » duc va, tuc va, luc va
nang o » nang co, nang ho, nang ro
ve cac » va cac, vien cac
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: ((su sach) OR (so sach)) ky nang o hoi. hieu ve cac xuc va thanh lam ((cua triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang o hoi. hieu ve cac xuc va thanh lam ((cua triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang o hoi. hieu ve cac xuc va thanh lam ((cua triet) or (va trien))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang o hoi. hieu ve cac xuc va thanh lam ((cua triet) or (va trien))*.