Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua kho ca snippets" » "qua khoa ca snippets", "quan khu ca snippets", "sua khoa ca snippets", "qua kho cua snippets", "qua kho cam snippets", "qua tho ca 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: (((("qua kho ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua kho ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua kho ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua kho ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.