Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet danh » thien danh, thien anh, thien dang
minh trang » tinh trang, minh tuan, minh quang
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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 thiet danh - ((((minh trang) or (minh hoang))) or (thanh trung)) cua nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - ((((minh trang) OR (minh hoang))) OR (thanh trung)) cua nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - ((((minh trang) or (minh hoang))) or (thanh trung)) cua nhung cong tac toan cau*.