Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hieu cac cau snippets" » "hieu cac code snippets", "hieu luc cau snippets", "hieu va cau snippets", "hieu van cau snippets", "hieu cac mau snippets", "hieu bac cau snippets", "hieu 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: (((("hieu cac 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: (((("hieu cac cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hieu cac cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu cac cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.