Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don linh chi snippets" » "don tinh chi snippets", "duong linh chi snippets", "dong kinh chi snippets", "don dinh chi snippets", "don minh chi snippets", "don linh chinh 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: (((("don linh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don linh chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don linh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don linh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.