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 » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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 (than cap))~.
• 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 (than cap)).
• 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 (than cap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - hanh ((khung cua) or (khan cua)) dung cong tac ((than cao) OR (than cap))*.