Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc my so snippets" » "nuoc my so snippets", "ngoc ly so snippets", "ngoc sy so snippets", "ngoc ma so snippets", "ngoc ky 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: (((("ngoc my 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: (((("ngoc my so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc my so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc my so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.