Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"led chieu so snippets" » "le chien so snippets", "le hieu so snippets", "led thieu so snippets", "led hieu so snippets", "led chieu cao 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: (((("led chieu 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: (((("led chieu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( led chieu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("led chieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.