Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao trong o snippets" » "tao trong o snippets", "dat trong o snippets", "cay trong o snippets", "dao trong co snippets", "dao trong _ snippets", "dao trong 2 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 trong o 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 trong o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao trong o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao trong o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.