Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"web dong son snippets" » "web song son snippets", "web huong son snippets", "web bang son snippets", "web dong von snippets", "web dong san snippets", "web hoang 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 dong 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 dong son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( web dong son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("web dong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.