Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hong luc moi snippets" » "dong luc moi snippets", "hong duc moi snippets", "thong luu moi snippets", "hong luat moi 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 luc moi 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 luc moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong luc moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong luc moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.