Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan tac du snippets" » "nhan tai du snippets", "nhan tao du snippets", "nhan tam du snippets", "nhan tac dau snippets", "nhan cac du snippets", "nhan tac da 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: (((("nhan tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan tac du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan tac du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.