Perhaps you should try some spelling variations:
khuong tinh » chuong trinh, phuong trinh, phuong binh
thien anh » thien danh, tien anh, thien thanh
hien anh » hien hanh, dien anh, tien anh
hang tai » hang va, dung tai
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien anh) OR (thien anh)) - hang tai ((cua hang) or (cua dang)) khuong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (thien anh)) - hang tai ((cua hang) OR (cua dang)) khuong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (thien anh)) - hang tai ((cua hang) or (cua dang)) khuong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) OR (thien anh)) - hang tai ((cua hang) or (cua dang)) khuong tinh toan cau*.