Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
quan dong » quang dong, quan long, quan hoang
dong cong » duong cong, dung cong, dang cong
theo chu » theo chieu, cho chu, chao chu
tac toan » tap toan, hach toan, tich toan
tam toan » tap toan, tam than, pham toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (hoc thieu)) manh - hanh trinh quan dong cong ((tac toan) OR (tam toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (hoc thieu)) manh - hanh trinh quan dong cong ((tac toan) OR (tam toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) or (hoc thieu)) manh - hanh trinh quan dong cong ((tac toan) OR (tam toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (hoc thieu)) manh - hanh trinh quan dong cong ((tac toan) OR (tam toan)) cau*.