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- Performing a fuzzy search may retrieve terms with similar spellings: "((khoa hoc) or (hoa hoc)) & ((nham or nhan) or pham) (pha" or phaip")~.
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- Removing quotes may allow a broader search: ((khoa hoc) or (hoa hoc)) & ((nham or nhan) or pham) (pha or phaip )*.