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