Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
phan cong » thanh cong
tung can » trung can, tung dan, trung cap
ban cong » bang cong, van cong, ban huong
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - thanh tung can ((ban cong) OR (phan cong)) dan ((than cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh tung can ((ban cong) OR (phan cong)) dan ((than cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh tung can ((ban cong) OR (phan cong)) dan ((than cau) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung can ((ban cong) OR (phan cong)) dan ((than cau) or (phan tu))*.