Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh van lu slippers" » "trinh han lu slippers", "trinh quan lu slippers", "trinh toan lu slippers", "trinh van luc slippers", "trinh van du slippers", "trinh van le slippers", "trinh van lu slippery", "trinh van lu 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: (((("trinh van lu slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh van lu slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh van lu slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh van lu slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.