Perhaps you should try some spelling variations:
trinh nhiet » trinh thiet, trinh nghien, trinh viet
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
tac than » tac thanh, bac thanh, cac thanh
tam than » ban than
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 trinh nhiet dong cong ((((tac than) OR (tam than))) or (tac nhan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh trinh nhiet dong cong ((((tac than) OR (tam than))) OR (tac nhan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh trinh nhiet dong cong ((((tac than) OR (tam than))) or (tac nhan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh trinh nhiet dong cong ((((tac than) OR (tam than))) or (tac nhan)) cau*.