Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh vu va slippers" » "trinh va va slippers", "trinh ve va slippers", "trinh vi va slippers", "trinh vu van slippers", "trinh tu va slippers", "trinh su va slippers", "trinh vu va slippery", "trinh vu va 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 vu va 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 vu va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh vu va slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh vu va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.