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