Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi chap khe snippets" » "phi thap khe snippets", "thi chap khe snippets", "thi phap khe snippets", "phi phap che snippets", "phi cam khe snippets", "phi chat khi 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: (((("phi chap khe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi chap khe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi chap khe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi chap khe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.