Perhaps you should try some spelling variations:
"đieu tranh cua ban." » "đieu trinh cua ban." (Expand Search), "đieu tranh chap ban." (Expand Search), "đieu tranh luan ban." (Expand Search), "đieu tranh cua bao." (Expand Search), "đieu tranh cua dan." (Expand Search), "đieu tranh cua can." (Expand Search)
"đieu tranh co ban." » "đieu thanh co ban." (Expand Search), "đieu tranh _ ban." (Expand Search)
"đieu tranh va ban." » "đieu trang va ban." (Expand Search), "đieu thanh va ban." (Expand Search), "đieu trinh va ban." (Expand Search), "đieu tranh va bao." (Expand Search), "đieu tranh va bai." (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("đieu tranh co ban.") OR ("đieu tranh va ban."))) OR ("đieu tranh cua ban."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"đieu tranh co ban.\") OR (\"đieu tranh va ban.\"))) OR (\"đieu tranh cua ban.\"))".
• Removing quotes may allow a broader search: (((( đieu tranh co ban. ) OR ( đieu tranh va ban. ))) OR ( đieu tranh cua ban. )).
• Adding a wildcard symbol may retrieve word variants: (((("đieu tranh co ban.") OR ("đieu tranh va ban."))) OR ("đieu tranh cua ban."))*.