Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
van thanh » ban thanh, van tuan
trung ap » trung cap, trung lap, trung tam
van phan » van phong, luan phan, van ban
ap dung » xay dung, van dung

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) or (doi chieu)) xanh - thanh trung ap dung cong ((van phan) OR (van thanh)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) xanh - thanh trung ap dung cong ((van phan) OR (van thanh)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doi chieu)) xanh - thanh trung ap dung cong ((van phan) OR (van thanh)) cac".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) xanh - thanh trung ap dung cong ((van phan) OR (van thanh)) cac*.