Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe cac cau snippets" » "khoe cham cau snippets", "khoe sach cau snippets", "cho cac cau snippets", "khoe cac mau snippets", "khoe bac cau snippets", "khoe ca cau 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: (((("khoe cac cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe cac cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoe cac cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoe cac cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.