Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con minh can snippets" » "cong vinh can snippets", "cong tinh can snippets", "doan minh can snippets", "con minh chanh snippets", "con minh danh snippets", "con minh tuan 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: (((("con minh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con minh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con minh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con minh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.