Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, theo chu, thi chieu
cong ngang » cong nhan, cong lang, cong nong
cong quang » luong quang, thong quang, duong quang
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
ho chieu » hoc thieu, doi chieu, mot chieu
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: ((ho chieu) or (theo chieu)) xanh - thanh trung cap thong ((cong ngang) OR (cong quang)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - thanh trung cap thong ((cong ngang) OR (cong quang)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - thanh trung cap thong ((cong ngang) OR (cong quang)) than cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - thanh trung cap thong ((cong ngang) OR (cong quang)) than cau*.