Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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