Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh va » trinh van, trinh vat, trinh ve
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
hoan » hoang, hoa, soan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoan thien thanh - hanh trinh va ((nhung cong) or (trong cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoan thien thanh - hanh trinh va ((nhung cong) OR (trong cong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoan thien thanh - hanh trinh va ((nhung cong) or (trong cong)) dan toan cau*.