Perhaps you should try some spelling variations:
"pho can canh snippets" » "pho can code snippets", "pho van canh snippets", "pho dan canh snippets", "pho can tranh snippets", "cho can canh snippets", "pho cap canh snippets", "pho cam canh 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 ("pho can canh snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("pho can canh snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( pho can canh snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("pho can canh snippets"))) or ("locating bug core snippets"))*.