Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duoc dao cau snippets" » "duoc dao code snippets", "duc dao cau snippets", "doc dao cau snippets", "duoc dai cau snippets", "duoc dat cau snippets", "duoc da cau snippets", "duoc tao 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: (((("duoc dao 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: (((("duoc dao cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duoc dao cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc dao cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.