Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cot hieu cua snippets" » "cot hieu code snippets", "co hieu cua snippets", "cot lieu cua snippets", "cong hieu cua snippets", "cot hieu qua snippets", "cot dieu cua snippets", "cot bieu cua 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: (((("cot hieu 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: (((("cot hieu cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cot hieu cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot hieu cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.