Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu canh cua snippets" » "thu canh code snippets", "thuc hanh cua snippets", "thu cong cua snippets", "thu ban cua snippets", "thu manh cua snippets", "thu hanh cua snippets", "thu anh 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: (((("thu canh 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: (((("thu canh cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thu canh cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu canh cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.