Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van duy pha slippers" » "van dung pha slippers", "van duy phan slippers", "van duy phi slippers", "van quy pham slippers", "van duy pha slippery", "van duy pha grippers"
"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: (((("van duy pha slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van duy pha slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van duy pha slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van duy pha slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.