Perhaps you should try some spelling variations:
chiet tach » chieu sach
hoc chiet » hoc thiet, hoc nhiet, hoc hien
tranh cua » doanh cua, manh cua
hang cong » hang nong, thanh cong, thong cong
bang cong » bang song, dung cong, cong cong
dang cong » dung cong
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - canh tranh cua ((hang cong) or (((bang cong) OR (dang cong)))) tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - canh tranh cua ((hang cong) OR (((bang cong) OR (dang cong)))) tan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - canh tranh cua ((hang cong) or (((bang cong) OR (dang cong)))) tan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - canh tranh cua ((hang cong) or (((bang cong) OR (dang cong)))) tan toan ban*.