Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
truong dao » truong dai, truong cao, truong bo
trung tai » truong tai, trung tam, trung dai
dong van » duong van, dang van, dong von
toan cao » toan ban
toan tap » toan ban
so dong » co dong, o dong, so dung

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 - thanh ((trung tai) or (truong dao)) so dong van ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh ((trung tai) OR (truong dao)) so dong van ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((trung tai) or (truong dao)) so dong van ((toan cao) or (toan tap))*.