Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham hung hoc snippets" » "pham hung hoc snippets", "cam hung hoc snippets", "ha hung hoc snippets", "ham chung hoc snippets", "ham khung hoc snippets", "ham nhung hoc 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: (((("ham hung 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: (((("ham hung hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham hung hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham hung hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.