Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son tang da snippets" » "son tung da snippets", "son thanh da snippets", "nen tang da snippets", "son tang dan snippets", "son tang dam snippets", "son tang ma 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: (((("son tang da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son tang da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son tang da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son tang da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.