Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
tong thong » thong thong, dong thong, cong thong
hieu lang » hieu quang, nhieu tang, hieu van
trung cua » truong cua, trung tuan, trung cap
thong dan » thong van, tuong dan, thong den
cua tong » cua cong, cua dong, cua nong
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than 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 (chieu xanh)) - thanh trung cua tong thong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sang) OR (hieu lang))) OR (chieu xanh)) - thanh trung cua tong thong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sang) or (hieu lang))) or (chieu xanh)) - thanh trung cua tong thong dan than cau*.