Perhaps you should try some spelling variations:
"battle of dien giao phap" » "battle of dien giai phap", "battle of dien giao phat", "battle of dien xgiai phap"
"battle of de gia phu" » "battle of de gian phu", "battle of de gia pha", "battle of de gia phi", "battle of de giai phu", "battle of de giau phu", "battle of do gia phu"
"battle of tren dia phu" » "battle of tren gian phu", "battle of tren dinh phu"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("battle of de gia phu") or ("battle of dien giao phap"))) or ("battle of tren dia phu"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("battle of de gia phu") OR ("battle of dien giao phap"))) OR ("battle of tren dia phu"))*.
• Removing quotes may allow a broader search: (((( battle of de gia phu ) or ( battle of dien giao phap ))) or ( battle of tren dia phu ))*.