Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chung ta hon snippets" » "chung tu hon snippets", "chung cu hon snippets", "chung vi hon snippets", "chung tam hon snippets", "chung ca hon snippets", "chung ta con 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: (((("chung ta hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung ta hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung ta hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung ta hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.