Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sang » chieu sach, chieu xanh, hieu lang
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
doanh va » doan va, doanh tai, doanh cua
san chay » san pham, dan chan, san chi
van chat » cao chat

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 tinh) or (chieu sang)) - canh doanh va nhung cong ((san chay) OR (van chat)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chieu sang)) - canh doanh va nhung cong ((san chay) OR (van chat)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (chieu sang)) - canh doanh va nhung cong ((san chay) OR (van chat)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chieu sang)) - canh doanh va nhung cong ((san chay) OR (van chat)) cau*.