Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung cap, dung cua
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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 xanh) OR (chieu sang)) - hanh ((trung cua) or (trung tuan)) nhung cong van tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trung cua) OR (trung tuan)) nhung cong van tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - hanh ((trung cua) or (trung tuan)) nhung cong van tuan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trung cua) or (trung tuan)) nhung cong van tuan cao*.