Perhaps you should try some spelling variations:
truong dao » truong dai, truong cao, truong bo
thong dong » thong duong, thuong dong, thong cong
dong doanh » dung doanh, trong doanh, doanh doanh
doanh phan » doanh nhan, doan phan, doanh thanh
hien tinh » khien tinh, thien tinh, bien tinh
trung dap » trung cap, trung dam, trung lap
trung dai » truong dai, trung tam, trung cap
phan cau » phan dau, phan cac, phan tu

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 tinh - hanh ((trung dap) or (((trung dai) OR (truong dao)))) thong dong doanh phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh ((trung dap) OR (((trung dai) OR (truong dao)))) thong dong doanh phan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tinh - hanh ((trung dap) or (((trung dai) OR (truong dao)))) thong dong doanh phan cau*".