Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nhung tuong » nhung huong, nhung phuong, hung vuong
trung tuan » trung thanh, trung tam, tran tuan
tuong dang » truong dang, tuong dan, trong dang
dang chinh » hang chinh, dang hinh, dung chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung cap, dung cua
chinh ca » chinh ta, chinh va, chinh tai

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 xanh) or (thien thanh)) - thanh ((trung cua) OR (trung tuan)) nhung tuong dang chinh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (thien thanh)) - thanh ((trung cua) OR (trung tuan)) nhung tuong dang chinh ca.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (thien thanh)) - thanh ((trung cua) OR (trung tuan)) nhung tuong dang chinh ca".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (thien thanh)) - thanh ((trung cua) OR (trung tuan)) nhung tuong dang chinh ca*.