Perhaps you should try some spelling variations:
"thu doi canh snippets" » "thu doi code snippets", "thu doi hanh snippets", "thu boi canh snippets", "thu do canh snippets", "thuc doi canh snippets", "phu doi canh snippets", "thu hoi canh snippets"
"locating bug core snippets" » "locating bug code 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 ("thu doi canh snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("thu doi canh snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( thu doi canh snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("thu doi canh snippets"))) or ("locating bug core snippets"))*.