Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc hieu cua snippets" » "doc hieu code snippets", "toc thieu cua snippets", "hoc thieu cua snippets", "hoc hien cua snippets", "doc hieu qua snippets", "doc dieu cua snippets", "doc 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: (((("python using java snippets") or ("doc hieu cua snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doc hieu cua snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doc hieu cua snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doc hieu cua snippets"))) or ("locating bug core snippets"))*.