Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"rap kien doi snippets" » "cap kien doi snippets", "dap kien doi snippets", "tran kien doi snippets", "rap bien doi snippets", "rap kien dai snippets", "rap kien noi 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: (((("rap kien doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rap kien doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( rap kien doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("rap kien doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.