Perhaps you should try some spelling variations:
thieu lang » thieu khang, thieu quang, chieu sang
thanh tung » thanh cong
khong cong » thong cong, khong cang, chong cong
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
cua khong » hua khong, cua phuong, cua thuong
tung cua » trung cua, tuong cua, dung cua
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 ((thieu lang) OR (hieu lang)) - thanh tung cua khong cong thanh ((than ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu lang) OR (hieu lang)) - thanh tung cua khong cong thanh ((than ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu lang) OR (hieu lang)) - thanh tung cua khong cong thanh ((than ban) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu lang) OR (hieu lang)) - thanh tung cua khong cong thanh ((than ban) or (toan ban))*.