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