Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ten lieu voi snippets" » "ten hieu voi snippets", "tien lien voi snippets", "tai lieu voi snippets", "ten lieu boi snippets", "ten lieu va snippets", "ten 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: (((("ten 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: (((("ten lieu voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ten lieu voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ten lieu voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.