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

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) OR (bo sach)) y nang ma hoi. lieu va tham doc va ((danh di) or (dinh viet)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) y nang ma hoi. lieu va tham doc va ((danh di) OR (dinh viet)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) y nang ma hoi. lieu va tham doc va ((danh di) or (dinh viet)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) y nang ma hoi. lieu va tham doc va ((danh di) or (dinh viet)) cua triet*.