Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
dinh ve » dinh ket, dinh van
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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 ma hoa. hieu ve cam xuc va ((hanh vi) or (dinh ve)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang ma hoa. hieu ve cam xuc va ((hanh vi) OR (dinh ve)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang ma hoa. hieu ve cam xuc va ((hanh vi) or (dinh ve)) su triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang ma hoa. hieu ve cam xuc va ((hanh vi) or (dinh ve)) su triet*.