Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"anh pho cong snippets" » "anh pho uong snippets", "anh cho cong snippets", "anh pho dong snippets", "anh tho cong snippets", "thanh pho cong 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: (((("anh pho cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh pho cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh pho cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh pho cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.