Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu quang » thieu quang, hieu quan, hieu qua
chieu sang » chieu sach, chieu xanh, nhieu tang
trung tuan » trung thanh, trung tam, tran tuan
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
hieu lang » nhieu tang, hieu van, biet lang
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cau » toan cau, doan dau, doan cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chieu sang) OR (hieu lang))) or (hieu quang)) - thanh trung tuan thong cong tac doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sang) OR (hieu lang))) OR (hieu quang)) - thanh trung tuan thong cong tac doan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((chieu sang) OR (hieu lang))) or (hieu quang)) - thanh trung tuan thong cong tac doan cau*".