Perhaps you should try some spelling variations:
chuong cham » chong chay, chuong chua, chuong han
phuong cham » phuong phap, phuong thao
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
tieu tinh » trieu tinh, tieu trinh, lieu tinh
hoa chat » hop chat, hoa phan
hoa mau » hoa may, hoa cau, hoa dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - thanh ((chuong cham) OR (phuong cham)) nhung cong thanh ((hoa mau) or (hoa chat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - thanh ((chuong cham) OR (phuong cham)) nhung cong thanh ((hoa mau) OR (hoa chat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - thanh ((chuong cham) OR (phuong cham)) nhung cong thanh ((hoa mau) or (hoa chat))".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - thanh ((chuong cham) OR (phuong cham)) nhung cong thanh ((hoa mau) or (hoa chat))*.