Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong su du snippets" » "trong san du snippets", "trong thu du snippets", "trong qua du snippets", "trong so du snippets", "trong su tu snippets", "trong su cu 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 su du 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 su du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong su du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong su du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.