Perhaps you should try some spelling variations:
"su canh tranh cuoc khi đong luc" » "su canh tranh duoc khi đong luc", "su canh trong cuoc khi đong luc", "su canh tranh cua khi đong luc", "su canh tranh cuoc khoi đong luc", "su canh tranh cuoc thi đong luc", "su canh tranh buoc khoi đong luc", "suc canh tranh cuoc khi đong luc", "su can tranh cuoc khi đong luc", "su anh tranh cuoc khi đong luc"
"su sach tran quoc thai đong luc" » "su sach tranh quoc thai đong luc", "su sach tren quoc thai đong luc", "su vach tran quoc thai đong luc", "su sach trung quoc thai đong luc", "su sach han quoc thai đong luc", "su sach tran duc thai đong luc", "su sach tran nuoc thai đong luc", "su sach tran quoc hoi đong luc", "su sach tran toc thai đong luc", "so sach tran quoc thai đong luc", "vu sach tran quoc thai 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 canh tranh cuoc khi đong luc") or ("su sach tran quoc thai đong luc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("su canh tranh cuoc khi đong luc") OR ("su sach tran quoc thai đong luc")).
• Removing quotes may allow a broader search: (( su canh tranh cuoc khi đong luc ) or ( su sach tran quoc thai đong luc )).
• Adding a wildcard symbol may retrieve word variants: (("su canh tranh cuoc khi đong luc") or ("su sach tran quoc thai đong luc"))*.