Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
trung cap » trung tam
cong van » cong vang, cong san, song van
phan tap » han tap, pha tap, phan tu
phan lap » phan 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 sach - manh ((trung cap) or (truong cao)) nhung cong van ((phan tap) OR (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - manh ((trung cap) OR (truong cao)) nhung cong van ((phan tap) OR (phan lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - manh ((trung cap) or (truong cao)) nhung cong van ((phan tap) OR (phan lap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - manh ((trung cap) or (truong cao)) nhung cong van ((phan tap) OR (phan lap))*.