Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran doc he snippets" » "tran duc he snippets", "than doc he snippets", "tranh duoc he snippets", "tran hoc he snippets", "tran do he snippets", "tran doc hieu 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: (((("tran doc he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran doc he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran doc he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran doc he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.