Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh tran » hanh trang, thanh tran, hanh tram
cua tinh » cua sinh, va tinh, ha tinh
va thong » va thuong, va phuong, he thong
cong san » cong tac
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban
doi cua » dai cua, hoi cua
tran va » tran van, trang va, tranh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi cua tinh - hanh tran va thong cong san ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi cua tinh - hanh tran va thong cong san ((toan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi cua tinh - hanh tran va thong cong san ((toan tai) or (toan tap))*.