Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
tieu sach » chieu sach, dien sach, te sach
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
dan thai » dang thai, dan thi, dan than
thai cao » tai cao, thoai cac, thuat cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - canh tranh luan ((hang cong) or (bang cong)) dan thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - canh tranh luan ((hang cong) OR (bang cong)) dan thai cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - canh tranh luan ((hang cong) or (bang cong)) dan thai cao*.