Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu hach » thien hach, chieu sach, hieu cach
hanh trang » canh tranh, hanh trinh, minh trang
cua thuong » cua truong, cua phuong, ca thuong
cao thuong » cao truong, ca thuong, cho thuong
hoc thieu » toc thieu, hoc hien
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh 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: hoc thieu hach - ((hanh trang) or (thanh trung)) ((cua thuong) or (cao thuong)) cong hach toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hach - ((hanh trang) OR (thanh trung)) ((cua thuong) OR (cao thuong)) cong hach toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu hach - ((hanh trang) or (thanh trung)) ((cua thuong) or (cao thuong)) cong hach toan cau*.