Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong do van slippers" » "luong dao van slippers", "cuong do van slippers", "luong du van slippers", "luong vo van slippers", "luong so van slippers", "luong do van slippery", "luong 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: (((("luong 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: (((("luong do van slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong do van slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong do van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.