Perhaps you should try some spelling variations:
tranh tuan » tran tuan, tranh luan, thanh tuan
nhung cong » dung cong, thong cong, hang cong
hien sach » dien sach, kien sach, thien hach
tong cong » trong cong, cong cong, dung cong
hang nong » thang long, han tong
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - canh tranh tuan ((((nhung cong) or (tong cong))) or (hang nong)) dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - canh tranh tuan ((((nhung cong) OR (tong cong))) OR (hang nong)) dan than cap.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - canh tranh tuan ((((nhung cong) or (tong cong))) or (hang nong)) dan than cap*.