Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
khung luan » chung luan, dung luan, hang luan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
khan cua » nhan cua, than cua, han cua
tac than » tac thanh, tam than, bac thanh
tac nhan » tao nhan, cac nhan, dac nhan

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 luan) or (khan cua)) dung cong ((tac than) or (tac nhan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((khung luan) OR (khan cua)) dung cong ((tac than) OR (tac nhan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((khung luan) or (khan cua)) dung cong ((tac than) or (tac nhan)) cao*.