Perhaps you should try some spelling variations:
thanh trung » thanh tung
tieu trinh » tien trinh, tien thinh, trieu tinh
nhung cong » dung cong, thong cong, nhung don
trung cap » truong cao, trung tam
hang cong » dang cong, hang nong, bang cong
ban than » ban thanh, van thanh, ban hang
bai toan » bai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu trinh - thanh trung cap ((nhung cong) OR (hang cong)) ((ban than) or (bai toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu trinh - thanh trung cap ((nhung cong) OR (hang cong)) ((ban than) OR (bai toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu trinh - thanh trung cap ((nhung cong) OR (hang cong)) ((ban than) or (bai toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - thanh trung cap ((nhung cong) OR (hang cong)) ((ban than) or (bai toan)) cau*.