Perhaps you should try some spelling variations:
thanh trung » thanh tung
tinh trang » minh trang, tinh quang, tinh toan
thong cong » trong cong, tong cong, thong thong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc thieu)) tinh - ((tinh trang) or (thanh trung)) cua thong cong san than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) tinh - ((tinh trang) OR (thanh trung)) cua thong cong san than tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) tinh - ((tinh trang) or (thanh trung)) cua thong cong san than tap*.