Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong ket ho snippets" » "dong ket code snippets", "dong kem ho snippets", "dung ket ho snippets", "dong viet ho snippets", "dong ket hop snippets", "dong ket hoa snippets", "dong ke ho 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: (((("dong ket ho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong ket ho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong ket ho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong ket ho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.