Perhaps you should try some spelling variations:
ban hanh » ban hang
su sach » vu sach
so sach » so sanh, bo sach, co sach
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
su viet » so viet
y dang » ky dang, 2 dang, _ dang
ve cam » ve cham, ve cac, va cam
vi su » va su, ve su, ki su

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