Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham rong doi snippets" » "pham trong doi snippets", "pham cong doi snippets", "nam trong doi snippets", "ham trong doi snippets", "ham vong doi snippets", "ham dong doi 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 rong doi 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 rong doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham rong doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham rong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.