Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thien hach » thien thanh
thuong con » thuong dong, truong cong, thong cong
hien hanh » dieu hanh
ca thuong » cao thuong, cua thuong, va thuong
thang ca » thang cua, hang ca, tang ca
van chat » cao chat
con tac » cong tac, con tap, can tac
tac van » tac vang, cac van, tac va

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 (hien hanh)) - thanh thang ca thuong con tac van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (hien hanh)) - thanh thang ca thuong con tac van chat.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (hien hanh)) - thanh thang ca thuong con tac van chat*.