Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kha tham cha snippets" » "khi tham cha snippets", "khai thac cha snippets", "khoa than cha snippets", "kha tham chi snippets", "kha tham khao snippets", "kha kham chua 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: (((("kha tham cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kha tham cha snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kha tham cha snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kha tham cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.