Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kai hoang du snippets" » "mai hoang du snippets", "lai hoang du snippets", "khac hoang du snippets", "kai hoang duy snippets", "kai hoang duc snippets", "kai hoang de 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: (((("kai hoang 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: (((("kai hoang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kai hoang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kai hoang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.