Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu tach » thien hach, chiet tach, chieu sach
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
trung dai » truong dai, truong dao, trung tam
hang cong » dang cong, hang nong, bang cong
tran phan » than phan, tra phan, tran han
toan phan » thanh phan, toan ban, hoa 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 thieu tach - thanh trung dai ((nhung cong) or (hang cong)) ((tran phan) OR (toan phan)) lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - thanh trung dai ((nhung cong) OR (hang cong)) ((tran phan) OR (toan phan)) lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - thanh trung dai ((nhung cong) or (hang cong)) ((tran phan) OR (toan phan)) lap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh trung dai ((nhung cong) or (hang cong)) ((tran phan) OR (toan phan)) lap*.