Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thi phap » thi hai, thi ha, thi hao
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo phap) or (thi phap)) tinh - hanh ((tang cua) or (hang cua)) thong cong tac tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo phap) OR (thi phap)) tinh - hanh ((tang cua) OR (hang cua)) thong cong tac tran van.
• Adding a wildcard symbol may retrieve word variants: ((theo phap) or (thi phap)) tinh - hanh ((tang cua) or (hang cua)) thong cong tac tran van*.