Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"web tong son snippets" » "web song son snippets", "web huong son snippets", "web bang son snippets", "web dong son snippets", "web hong son snippets", "web tang son 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: (((("web tong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("web tong son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( web tong son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("web tong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.