Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
dang toan » dang tran, dang thanh, dang hoang
dung toan » dung doanh, dung thang, dung thanh
cua dung » cua dang, cua dong, qua dung
dan toan » van toan, dan than, manh toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - hanh trinh cua dung cong ((((dang toan) OR (dung toan))) OR (dan toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - hanh trinh cua dung cong ((((dang toan) OR (dung toan))) or (dan toan)) cao~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - hanh trinh cua dung cong ((((dang toan) OR (dung toan))) or (dan toan)) cao*.