Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cong cha snippets" » "hoc co cha snippets", "cac cong cha snippets", "hoc dung cha snippets", "hoc cong chat snippets", "hoc cong chua snippets", "hoc cong cua 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: (((("hoc cong 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: (((("hoc cong cha snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc cong cha snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cong cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.