Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao thanh ho snippets" » "ban thanh ho snippets", "tro thanh ho snippets", "de thanh ho snippets", "dao thanh pho snippets", "dao thanh hoa snippets", "dao thanh 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: (((("dao thanh ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao thanh ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao thanh ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao thanh ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.