Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tho viet dao snippets" » "thon viet dao snippets", "thong viet dao snippets", "hoc viet dao snippets", "tho viet lao snippets", "tho viet bao snippets", "tho viet da snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("tho viet dao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"tho viet dao snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( tho viet dao snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tho viet dao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.