Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ninh viet » sinh vien, anh viet
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
va than » va thanh, van than, va phan
danh di » danh du, xanh di, danh dien
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
doc va » duoc va, hoc va, duc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang ma hoi. lieu va than doc va ((danh di) or (ninh viet)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ma hoi. lieu va than doc va ((danh di) OR (ninh viet)) cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach y nang ma hoi. lieu va than doc va ((danh di) or (ninh viet)) cua triet*.