Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong den bo snippets" » "huong den bo snippets", "tuong den bo snippets", "vuong den bo snippets", "cuong den o snippets", "cuong den do snippets", "cuong ben bo 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: (((("cuong den bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuong den bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong den bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong den bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.