Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
bang huong » bang phuong, ban huong, bang suong
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
cua bang » chua bang, cua ban, cua dang
dan van » dang van, doan van, dao van

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 (hien hanh))) or (diep tinh)) - hanh trung cua bang huong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sang) OR (hien hanh))) OR (diep tinh)) - hanh trung cua bang huong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sang) or (hien hanh))) or (diep tinh)) - hanh trung cua bang huong dan van ban*.