Perhaps you should try some spelling variations:
thanh trung » thanh tung
tong thong » thong thong, dong thong, cong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, trung cap
thong dan » thong van, tuong dan, thong den
cua tong » cua cong, cua dong, cua nong
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 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 dan ((than ban) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh trung cua tong thong dan ((than ban) or (toan ban))*.