Perhaps you should try some spelling variations:
hoc thuyet » hoc chuyen
thanh tung » thanh cong
cua thong » cua thuong, cua khong, cua tong
duong van » duong va, luong va, dang van
hoc tien » hoc tieng, hoc hien, hoc vien
tung cua » trung cua, tuong cua, dung cua
cong tac » cong ty
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc tien) or (hoc thuyet)) anh - thanh tung cua thong ((cong tac) or (duong van)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc tien) OR (hoc thuyet)) anh - thanh tung cua thong ((cong tac) OR (duong van)) phan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc tien) or (hoc thuyet)) anh - thanh tung cua thong ((cong tac) or (duong van)) phan cau*.