Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong hoi le snippets" » "trong thoi le snippets", "truong hoi le snippets", "trong choi le snippets", "trong hoi ve snippets", "trong hai le snippets", "trong hoi e 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: (((("trong hoi 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: (((("trong hoi le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong hoi le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong hoi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.