Perhaps you should try some spelling variations:
thanh trung » thanh tung
tong thong » thong thong, cong thong, thong thuong
dong thong » thong thong, nong thon, dong thanh
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, trung cap
than ban » thanh ban, than man, nhuan ban
toan ban » van 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 hien xanh - thanh trung cua ((tong thong) OR (dong thong)) dan ((than ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh trung cua ((tong thong) OR (dong thong)) dan ((than ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - thanh trung cua ((tong thong) OR (dong thong)) dan ((than ban) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh trung cua ((tong thong) OR (dong thong)) dan ((than ban) or (toan ban))*.