Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot cong hoc snippets" » "moi cong hoc snippets", "hoc cong hoc snippets", "bo cong hoc snippets", "mot dong hoc snippets", "mot cong hoa snippets", "mot cong coc 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: (((("mot cong hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mot cong hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot cong hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot cong hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.