Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa dieu so snippets" » "hoc dieu so snippets", "nha dieu so snippets", "khoa hieu so snippets", "khoa lieu so snippets", "khoa dieu co 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: (((("khoa dieu 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: (((("khoa dieu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa dieu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa dieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.