Perhaps you should try some spelling variations:
"su tan tran cong khi đong luc" » "su tan tran hong khi đong luc", "su tan trien cong khi đong luc", "su tan tran hoang khi đong luc", "su tan tran cong thai đong luc", "su tan tran khong khi đong luc", "su tan tran cong ha đong luc", "su van tran cong khi đong luc", "su tai tran cong khi đong luc", "su han tran cong khi đong luc"
"su can tranh co khi đong luc" » "su canh tranh co khi đong luc", "su van ranh co khi đong luc", "su co tranh co khi đong luc", "su can trinh co khi đong luc", "su can tranh o khi đong luc", "su can tranh cuoc khi đong luc", "su van tranh co khi đong luc", "su cao tranh co khi đong luc", "tu can tranh co khi đong luc"

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: (("su can tranh co khi đong luc") or ("su tan tran cong khi đong luc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("su can tranh co khi đong luc") OR ("su tan tran cong khi đong luc")).
• Removing quotes may allow a broader search: (( su can tranh co khi đong luc ) or ( su tan tran cong khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (("su can tranh co khi đong luc") or ("su tan tran cong khi đong luc"))*.