Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat ha don snippets" » "kham pha don snippets", "chat hoa don snippets", "khac hau don snippets", "khat ha dong snippets", "khat hoa don snippets", "khat la don 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: (((("khat ha don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khat ha don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat ha don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat ha don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.