Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vien can cau snippets" » "vien can code snippets", "vien canh cau snippets", "vien cac cau snippets", "vien cao cau snippets", "vien van cau snippets", "vien ban cau snippets", "vien ca cau 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: (((("vien can cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vien can cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( vien can cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vien can cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.