Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thien hach » hien hanh
chieu sang » chieu sach, chieu xanh, hieu lang
hang hang » nang hang, cang thang, hung thang
dong cong » duong cong, dung cong, dang cong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
hang ca » hang va, nang cao, hang tai
ca dong » cao dong, cau dong, cua dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((thien hach) OR (thien thanh))) or (chieu sang)) - hang hang ca dong cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thien hach) OR (thien thanh))) OR (chieu sang)) - hang hang ca dong cong dan phan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thien hach) OR (thien thanh))) or (chieu sang)) - hang hang ca dong cong dan phan cau*".