Perhaps you should try some spelling variations:
sach tham » sach nha
thanh loi » thanh hoa, thanh hai, thanh lap
dua tren » dung tren
sach thu » sach thue, sach thieu, cach thuc
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cam tu » cam thu, nam tu, dam tu
ve cam » ve cham, ve cac, va cam

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: te ((sach thu) OR (sach tham)) nang xa hoi. hieu ve cam tu va thanh loi ((cau tren) OR (dua tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thu) OR (sach tham)) nang xa hoi. hieu ve cam tu va thanh loi ((cau tren) or (dua tren))~".
• Adding a wildcard symbol may retrieve word variants: te ((sach thu) OR (sach tham)) nang xa hoi. hieu ve cam tu va thanh loi ((cau tren) or (dua tren))*.