Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
hanh trinh » canh tranh, hanh chinh
tuong cong » trong cong, tong cong, luong cong
trinh vat » trinh van, trinh luat, sinh vat
chao cuu » cham cuu, chao chu, khao cuu
tap toan » tap doan, tap quan, bai toan
toan cau » 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: chao cuu tinh - hanh trinh vat ((tuong cong) or (truong cong)) tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao cuu tinh - hanh trinh vat ((tuong cong) OR (truong cong)) tap toan cau.
• Adding a wildcard symbol may retrieve word variants: chao cuu tinh - hanh trinh vat ((tuong cong) or (truong cong)) tap toan cau*.