Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van duoc hoi snippets" » "van duoc code snippets", "van duc hoi snippets", "vat duoc hoi snippets", "tan duoc hoi snippets", "van quoc hoi snippets", "van duoc hoc snippets", "van duoc si 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: (((("van duoc hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van duoc hoi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van duoc hoi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van duoc hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.