Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang van bot snippets" » "dang van bot snippets", "hoang van bot snippets", "trong van bot snippets", "tang van bon snippets", "tang van hoat snippets", "tang dang bot 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: (((("tang van bot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tang van bot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang van bot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang van bot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.