Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cong doan » cong dan, cong hoan, dong doanh
phan cau » phan dau, phan cac, phan lap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((trang cua) OR (trung cua)) dung cong doan ((phan cau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((trang cua) or (trung cua)) dung cong doan ((phan cau) OR (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trang cua) or (trung cua)) dung cong doan ((phan cau) OR (phan tu))*.