Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
cua truong » cua trung, xuan truong, cac truong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua trong » cua trung, qua trong, ca trong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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