Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho dong che snippets" » "pho uong che snippets", "pho thong che snippets", "phan dong che snippets", "pho dong chen snippets", "pho duong che snippets", "pho dong cho snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("pho dong che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pho dong che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho dong che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho dong che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.