Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, truong thanh
khong cong » thong cong, khong cang, chong cong
trinh phan » trinh han, trinh quan, thanh phan
tran tuan » tran xuan, tran quang, tran thanh
phan dau » phan tu, hang dau

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 ((((trung tuan) OR (tran tuan))) or (trung tam)) khong cong trinh phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - thanh ((((trung tuan) OR (tran tuan))) OR (trung tam)) khong cong trinh phan dau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - thanh ((((trung tuan) OR (tran tuan))) or (trung tam)) khong cong trinh phan dau*".