Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri cham con snippets" » "thi cham con snippets", "tri chat con snippets", "tri tham con snippets", "tri pham cong snippets", "tri chat cong snippets", "tri cham soc 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: (((("tri cham con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri cham con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri cham con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri cham con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.