Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan doc voi snippets" » "phan doc code snippets", "phan duoc voi snippets", "phan duc voi snippets", "than doc voi snippets", "phan doi voi snippets", "phan doc vi snippets", "phan do voi snippets"
"python using java snippets" » "python using data 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: (((("phan doc voi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan doc voi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan doc voi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan doc voi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.