Perhaps you should try some spelling variations:
khong thong » khong trong, thong thuong, phong chong
hien nganh » vien nganh, hieu nganh, trien nganh
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tung » thanh cong
san thanh » ban thanh, van thanh, son thanh
thanh cau » thanh chau, thanh mau, nhanh cau
tung cua » trung cua, tuong cua, dung cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien nganh) or (hien nhanh)) - thanh tung cua ((khong thong) OR (thong thong)) san thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nganh) OR (hien nhanh)) - thanh tung cua ((khong thong) OR (thong thong)) san thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nganh) or (hien nhanh)) - thanh tung cua ((khong thong) OR (thong thong)) san thanh cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nganh) or (hien nhanh)) - thanh tung cua ((khong thong) OR (thong thong)) san thanh cau*.