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