Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
dong cong » duong cong, dung cong, cong cong
dang cong » dung cong
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan toan

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