Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
khung cua » chung cua, khung luan, chung cu
dung cong » dung trong
khan cua » nhan cua, than cua, han cua
cong tac » cong ty
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap

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