Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho tac du snippets" » "kho bac du snippets", "kho tan du snippets", "nho tac du snippets", "kho tac dau snippets", "kho cac du snippets", "kho tac da 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: (((("kho tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho tac du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho tac du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.