Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cheng lu van slippers" » "cheng lin van slippers", "zheng liu van slippers", "chen yu van slippers", "cheng luu van slippers", "cheng luc van slippers", "cheng le van slippers", "cheng lu van slippery", "cheng lu 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: (((("cheng lu 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: (((("cheng lu van slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cheng lu van slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cheng lu van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.