Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
cong trong » cong thuong, duong trong, cong trinh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
tran tuan » tran xuan, tran quang, tran thanh
trong nam » thong nam, trong lam, trong cac
toan cao » toan ban
toan tap » toan ban

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 ((trung cua) or (tran tuan)) cong trong nam ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cua) OR (tran tuan)) cong trong nam ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung cua) or (tran tuan)) cong trong nam ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cua) or (tran tuan)) cong trong nam ((toan cao) OR (toan tap))*.