Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoc dung cau snippets" » "hoc dung code snippets", "hoc ung cau snippets", "hoc dan cau snippets", "hoc cong cau snippets", "hoc dung chau snippets", "hoc dung cu snippets", "hoc dung cac 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: (((("hoc dung 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: (((("hoc dung cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc dung cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc dung cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.