Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
cong dinh » cong vinh, cong tinh, cong danh
dinh thai » dinh thi, sinh thai, tinh thai
anh tang » anh bang, anh dang, anh tong
anh sang » lanh sang, anh bang, anh dang
anh nang » ganh nang, anh bang, anh dang
cua dung » cua dang, cua dong, qua dung
thai cao » tai cao, thoai cac, thuat cao

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 sach - ((((anh tang) or (anh sang))) or (anh nang)) cua dung cong dinh thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((((anh tang) OR (anh sang))) OR (anh nang)) cua dung cong dinh thai cao*.