Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo chieu » ho chieu, theo chu, thi chieu
cua thong » cua thuong, cua khong, cua tong
hanh ban » thanh ban, hang ban, hanh san
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
ban cua » ban quan

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