Perhaps you should try some spelling variations:
thanh trung » thanh tung
trong quang » truong quang, thong quang, trong quan
theo chieu » theo tieu, theo chu, thi chieu
cong trong » cong thuong, duong trong, cong trinh
quang toan » quang tuan, quang tran, quang doan
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
ho chieu » doi chieu, mot chieu, thi chieu
toan cao » toan ban, toan tap

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