Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
dua tren » dung tren
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
ve cam » ve cac, va cam, ve cai

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 nang xa hoi. hieu ((ve cam) OR (ve cham)) 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 nang xa hoi. hieu ((ve cam) OR (ve cham)) tu va thanh loi ((cau tren) or (dua tren))~".
• Adding a wildcard symbol may retrieve word variants: te sach thu nang xa hoi. hieu ((ve cam) OR (ve cham)) tu va thanh loi ((cau tren) or (dua tren))*.