Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho dao dong snippets" » "pho lao dong snippets", "pho ha dong snippets", "pho bat dong snippets", "cho dao dong snippets", "pho da dong snippets", "pho dau dong 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: (((("pho dao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pho dao dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho dao dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho dao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.