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