Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
trinh toan » tinh toan, thanh toan, trinh han
nhung cong » dung cong, thong cong, hang cong
chu manh » chu han, chu van, thu minh
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » 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: theo ((chu manh) or (ho manh)) - hanh ((trinh quan) or (trinh toan)) nhung cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu manh) OR (ho manh)) - hanh ((trinh quan) OR (trinh toan)) nhung cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) or (ho manh)) - hanh ((trinh quan) or (trinh toan)) nhung cong tap toan cau*.