Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot tuong do snippets" » "doi tuong do snippets", "dot trong do snippets", "mot cong do snippets", "mot tuong dao snippets", "mot tuong doi snippets", "mot tuong ho snippets"
"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: (((("mot tuong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mot tuong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot tuong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot tuong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.