Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"thi dan 31 snippets" » "thi doan 31 snippets", "thi lan 31 snippets", "thi dai 31 snippets", "thi den 31 snippets", "thi dan 31 slippers"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"thi dan 31 snippets\") OR (\"python using java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( thi dan 31 snippets ) OR ( python using java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("thi dan 31 snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets"))*.