Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho cao cong snippets" » "pho cac cong snippets", "pho cao dang snippets", "pho cua cong snippets", "pho cap cong snippets", "cho cao cong snippets", "pho cam cong 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 cao cong 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 cao cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho cao cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.