Perhaps you should try some spelling variations:
thien thanh » thi thanh, hien hanh, chien tranh
thanh trung » thanh tung
tien thanh » tien thinh, tran thanh, den thanh
hien danh » thien danh, hien hanh, hien nhanh
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
dan phan » doan phan, dan chan, van phan

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 danh) or (((thien thanh) OR (tien thanh)))) - thanh trung cua thong thong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien danh) OR (((thien thanh) OR (tien thanh)))) - thanh trung cua thong thong dan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien danh) or (((thien thanh) OR (tien thanh)))) - thanh trung cua thong thong dan phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien danh) or (((thien thanh) OR (tien thanh)))) - thanh trung cua thong thong dan phan tu*.