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