Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong cong » trong cong, tong cong, thong thong
hoc thieu » hoc hien
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
tran tuan » tran xuan, tran quang, tran thanh
cong ban » cong bang, cong san, cong tan
tran tan » tran van, tran thanh, trang tuan

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