Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu phong so snippets" » "chau phong so snippets", "chu phuong so snippets", "chu khong so snippets", "chu phong mo snippets", "chu phong cho snippets", "chu 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: (((("chu 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: (((("chu phong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu phong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu phong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.