Perhaps you should try some spelling variations:
"phu cao cong snippets" » "phu cao code snippets", "phu cac cong snippets", "phu cao dang snippets", "phu cua cong snippets", "phu can cong snippets", "phung cao cong snippets", "phuc cam cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("phu cao cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("phu cao cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phu cao cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phu cao cong snippets"))) or ("locating bug core snippets"))*.