Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
khung cua » khung luan, chung cu, dung cua
chung cua » chung cu, dung cua, huong cua
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
khan cua » nhan cua, than cua, han cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

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