Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
va tham » van tham, va cham, va thuat
danh vi » dinh vi, danh di, danh va
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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