Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
truong ca » truong cao, truong va, trong ca
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
trung ca » trung cap, trung cua, trung can
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - thanh ((trung ca) OR (truong ca)) dung cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh ((trung ca) OR (truong ca)) dung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh ((trung ca) OR (truong ca)) dung cong tan toan cao*.