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