Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tren thi he snippets" » "trien thi he snippets", "tran thi he snippets", "trieu thi he snippets", "tren thi hue snippets", "tren thi hoe snippets", "tren thi ha 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: (((("tren thi 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: (((("tren thi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tren thi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tren thi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.