Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong do van slippers" » "cong dot van slippers", "cuong do van slippers", "cong so van slippers", "cong dao van slippers", "cong vo van slippers", "cong do van slippery", "cong do van 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: (((("cong do van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong do van slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong do van slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong do van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.