Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cua khong » hua khong, cua phuong, cua thuong
thong va » thong cua, truong va, thong qua
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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) or (canh tranh)) cua khong thong va ((than cao) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((thanh trung) OR (canh tranh)) cua khong thong va ((than cao) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - ((thanh trung) or (canh tranh)) cua khong thong va ((than cao) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((thanh trung) or (canh tranh)) cua khong thong va ((than cao) OR (than cap))*.