Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc duc canh snippets" » "hoc luc canh snippets", "hoc duc anh snippets", "hoc duc manh snippets", "hoc duoc canh snippets", "hoc nuoc canh snippets", "hoc thuc canh 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: (((("hoc duc canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc duc canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc duc canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc duc canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.