Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc viet le snippets" » "hoc viet le snippets", "thuc hien le snippets", "thuc vat le snippets", "thuc viet ve snippets", "thuc viet lao snippets", "thuc viet lai 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: (((("thuc viet le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuc viet le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc viet le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc viet le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.