Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huy phong so snippets" » "duy phong so snippets", "hai phong so snippets", "huy dong so snippets", "huy phong mo snippets", "huy phong cho snippets", "huy cong so 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: (((("huy phong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huy phong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huy phong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huy phong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.