Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cua » truong cua, trung tuan, trung cap
thong cua » thong quan, thong tu, huong cua
doc hieu » toc thieu, hoc thieu, hoc hien
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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: doc hieu xanh - hanh ((trung cua) or (((thong cua) or (hang cua)))) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh ((trung cua) OR (((thong cua) OR (hang cua)))) nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((trung cua) or (((thong cua) or (hang cua)))) nhung cong tac toan cau*.