Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
va dau » va dao
vi cua » vai cua, di cua
ve cac » va cac, vien cac
cua te » cua tu

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 (so sanh)) ty lang xa hoi. hieu ve cac xuc ((van doanh) or (va dau)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ty lang xa hoi. hieu ve cac xuc ((van doanh) OR (va dau)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ty lang xa hoi. hieu ve cac xuc ((van doanh) or (va dau)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ty lang xa hoi. hieu ve cac xuc ((van doanh) or (va dau)) vi cua te*.