Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"le dinh trac slippers" » "le sinh trac slippers", "le dinh tri slippers", "le dinh cac slippers", "le minh trac slippers", "le dinh trac slippery", "le dinh trac 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: (((("le dinh trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("le dinh trac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( le dinh trac slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("le dinh trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.