Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » canh tranh, hanh chinh
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua thuong, cua khong, cua tong
hach toan » thanh toan, manh toan
yen tinh » tuyen tinh
tac toan » tap toan, tam toan, tich toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: su yen tinh - ((hanh tang) or (hanh trinh)) cua thong cong ((tac toan) or (hach toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su yen tinh - ((hanh tang) OR (hanh trinh)) cua thong cong ((tac toan) OR (hach toan)) cao.
• Adding a wildcard symbol may retrieve word variants: su yen tinh - ((hanh tang) or (hanh trinh)) cua thong cong ((tac toan) or (hach toan)) cao*.