Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
su sach » so sach, vu sach
sach tu » sach thu, cach tu, sach ty
va tinh » may tinh
cu tren » tu tren, dua tren
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
ve cam » ve cham, ve cac, va cam
vi cu » vi su, vi xu, vi du

You may be able to get more results by adjusting your search query.

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