Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hong son toc snippets" » "hoang son toc snippets", "dong son toc snippets", "hang son toc snippets", "hong so toc snippets", "hong son nuoc snippets", "hong song toi 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: (((("hong son toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hong son toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong son toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong son toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.