Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang cong » dang cong, hang nong, bang cong
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
hoc hieu » hoc thieu, hoc hien, doc hieu
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
phan cau » phan dau, phan cac, phan tu

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 - canh ((tranh va) OR (trang va)) hang cong toan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - canh ((tranh va) OR (trang va)) hang cong toan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh ((tranh va) OR (trang va)) hang cong toan phan cau*.