Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
hanh trinh » canh tranh, hanh chinh
chuan dong » chua dong, chuan long, chuyen dong
cong ngang » cong nhan, cong quang, cong lang
ngang toan » nganh toan, dang toan, quang toan
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
theo chu » theo chieu, cho chu, chao chu
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: ((ho chieu) or (theo chu)) tinh - hanh trinh chuan dong cong ngang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chu)) tinh - hanh trinh chuan dong cong ngang toan cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chu)) tinh - hanh trinh chuan dong cong ngang toan cao*.