Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
van thanh » van tuan
cau tren » cu tren, dau tren, ca tren
cham xuc » cam xuc, chat xuc, cham soc
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
long ha » dong ha, cong ha, dong hoa
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
vi cau » va cau, ve cau, di cau

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 ty ((nang xa) or (long ha)) hoi. hieu ve cham xuc ((van thanh) OR (ban thanh)) vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((nang xa) OR (long ha)) hoi. hieu ve cham xuc ((van thanh) OR (ban thanh)) vi cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((nang xa) or (long ha)) hoi. hieu ve cham xuc ((van thanh) OR (ban thanh)) vi cau tren".
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) or (long ha)) hoi. hieu ve cham xuc ((van thanh) OR (ban thanh)) vi cau tren*.