Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tac nhan cua snippets" » "tac nhan code snippets", "tao nhan cua snippets", "cac nhan cua snippets", "dac nhan cua snippets", "tac nhat cua snippets", "tac nhan luc snippets", "tac nhan su 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: (((("tac nhan cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac nhan cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tac nhan cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac nhan cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.