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