Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thanh tung » thanh cong
trinh dong » trinh duong, trinh dung, trinh cong
dong thanh » truong thanh
qua trinh » qua kinh
hoc kien » hoc hien, hoc vien, hoa kien
kien mac » dien mao, tien mai, kien ha
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc kien mac - ((thanh tung) or (hanh trinh)) qua trinh dong thanh ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc kien mac - ((thanh tung) OR (hanh trinh)) qua trinh dong thanh ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc kien mac - ((thanh tung) or (hanh trinh)) qua trinh dong thanh ((toan cau) or (toan tap))*.