Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong tin doi snippets" » "dong tin code snippets", "thong tin doi snippets", "luong tin doi snippets", "dong kinh doi snippets", "dong tinh doi snippets", "dong tin di snippets", "dong tin don 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 tin doi 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 tin doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong tin doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tin doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.