Perhaps you should try some spelling variations:
bang thang » cang thang, lang thang, bang thanh
chat tach » chiet tach, thuat tach, chat tai
chua dong » cua dong, ha dong, hoa dong
thang ban » hang ban, tang ban, thanh ban
hoc chat » hoc phat, hoc cao, hoc phan
huy dong » ha dong
ban can » ban dan, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chat tach - canh tranh ((chua dong) OR (huy dong)) bang thang ban can~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chat tach - canh tranh ((chua dong) OR (huy dong)) bang thang ban can".
• Adding a wildcard symbol may retrieve word variants: hoc chat tach - canh tranh ((chua dong) OR (huy dong)) bang thang ban can*.