Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
khau thong » khau thuong, khap thong, khau tong
cach thuc » anh thuc, cac thu
thuc thuc » hoc thuc
thuc sach » thuoc sach, thu sach, thuc cach
chu khong » he khong, thi khong, chu trong
su cach » su sach, tu cach, su cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach thuc thuc sach nha ((((chu khong) or (khau thong))) or (phap thong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach thuc thuc sach nha ((((chu khong) OR (khau thong))) OR (phap thong))*.