Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cuoc luc » coc luc, duoc lac, duoc luu
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
su sach » so sach, vu sach
ky dang » ky nang, ky danh
hieu va » hieu qua
1 danh » 2 danh
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua

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 ((ky dang) or (1 danh)) xa hoi. ((hieu va) or (lieu va)) cuoc luc va tinh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (1 danh)) xa hoi. ((hieu va) OR (lieu va)) cuoc luc va tinh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky dang) or (1 danh)) xa hoi. ((hieu va) or (lieu va)) cuoc luc va tinh vi cua triet*.