Perhaps you should try some spelling variations:
cong truong » cuong truong, cong thuong, cong trong
cong tuong » cong thuong, cong trong, cong luong
hanh trinh » canh tranh, hanh chinh
hiem ngan » kim ngan, viem gan
trinh thi » trinh tai, dinh thi, trinh tu
manh toan » thanh toan, anh tuan, tinh toan
hoc hiem » hoc hien, hoc thieu, hoc thiet
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 hiem ngan - hanh trinh thi ((cong tuong) or (cong truong)) ((dan toan) OR (manh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hiem ngan - hanh trinh thi ((cong tuong) OR (cong truong)) ((dan toan) OR (manh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hiem ngan - hanh trinh thi ((cong tuong) or (cong truong)) ((dan toan) OR (manh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - hanh trinh thi ((cong tuong) or (cong truong)) ((dan toan) OR (manh toan)) ban*.