Perhaps you should try some spelling variations:
chinh truong » chinh trong, sinh truong, trinh truong
anh truong » manh truong, anh thuong, anh trong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
va dung » van dung, va duong, vat dung

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) or (toan tien)) tach - ((chinh truong) or (anh truong)) va dung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (toan tien)) tach - ((chinh truong) OR (anh truong)) va dung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (toan tien)) tach - ((chinh truong) or (anh truong)) va dung cong tan toan ban*.