Perhaps you should try some spelling variations:
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc chiet » hoc thiet, hoc nhiet, hoc viet
cua thong » cua thuong, cua khong, cua tong
tung cua » trung cua, tuong cua, dung cua
tan van » tran van, tang van, dang van
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chiet) or (hoc hien)) tach - thanh tung cua thong cong ((tan van) OR (luan van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chiet) OR (hoc hien)) tach - thanh tung cua thong cong ((tan van) OR (luan van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chiet) or (hoc hien)) tach - thanh tung cua thong cong ((tan van) OR (luan van)) ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chiet) or (hoc hien)) tach - thanh tung cua thong cong ((tan van) OR (luan van)) ban*.