Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
trung cua » truong cua, trung tuan, trung cap
tac nhanh » tac nhan, tac thanh, tai nhanh
tai thanh » thi thanh, tai chinh, ban thanh
vat cong » bat cong, sat cong, vat con

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