Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach thu » sach thue, sach thieu, sach tham
cau tren » cu tren, ca tren, cau treo
thanh vi » hanh vi, thanh va, thanh ve
dau tren » dau tien, dat tren, dau tieng
thu nang » thi nang, thu hang, thu bang
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau treo
te sach » toc sach
ve bac » ve bao, ve cac, ve ban
bac so » bac son, bac si, bac bo
so van » su van, vo van
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thu nang x hoi. hieu ve bac so van thanh vi ((cuu tre) or (((cau tren) or (dau tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang x hoi. hieu ve bac so van thanh vi ((cuu tre) OR (((cau tren) OR (dau tren)))).
• Adding a wildcard symbol may retrieve word variants: te sach thu nang x hoi. hieu ve bac so van thanh vi ((cuu tre) or (((cau tren) or (dau tren))))*.