Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong tan so snippets" » "trong san so snippets", "trong quan so snippets", "trong cac so snippets", "trong tan soi snippets", "trong tan son snippets", "trong than so 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: (((("trong tan so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong tan so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong tan so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong tan so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.