Perhaps you should try some spelling variations:
khong trong » khoang trong, thong trong, phong trong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
tranh hoac » thanh hoach, thanh hoa, trinh hoa
hoac khong » hoa khong, hoc khong, hay khong
thanh cau » thanh chau, nhanh cau, thanh ca
thanh mau » hanh mau, thanh san, thanh hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - canh tranh hoac khong trong cac ((thanh cau) OR (thanh mau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - canh tranh hoac khong trong cac ((thanh cau) OR (thanh mau))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - canh tranh hoac khong trong cac ((thanh cau) OR (thanh mau))*.