Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cong ngang » cong nhan, cong quang, cong lang
ngang toan » nganh toan, dang toan, quang toan
cac trong » cac truong, cay trong, tac trong
toan cau » 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: theo chieu xanh - thanh trong cac trong cong ngang toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh trong cac trong cong ngang toan cau*.