Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc danh van slippers" » "hoc dan van slippers", "hoc anh van slippers", "hoc hanh van slippers", "hoc doanh van slippers", "hoc dang van slippers", "hoc dinh van slippers", "hoc danh van slippery", "hoc danh 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: (((("hoc danh 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: (((("hoc danh van slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc danh van slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc danh van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.