Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
trung tao » trung tam, trong tao, trung tai
tao thong » tao trong, giao thong, toan thong
thong dan » thong van, tuong dan, thong den
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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) or (theo chieu)) tinh - thanh trung tao thong thong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (theo chieu)) tinh - thanh trung tao thong thong dan than cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (theo chieu)) tinh - thanh trung tao thong thong dan than cau*.