Perhaps you should try some spelling variations:
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
dong cong » duong cong, dung cong, dang cong
doc hieu » toc thieu, hoc thieu, hoc hien
theo chu » theo chieu, cho chu, chao chu
tung van » trung van, tang van, dung van
pho ban » cho ban, pho bac, pho can
pha ban » pha san, pha tan, nhat ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (theo chu)) xanh - thanh tung van dong cong thanh ((pho ban) or (pha ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (theo chu)) xanh - thanh tung van dong cong thanh ((pho ban) OR (pha ban)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (theo chu)) xanh - thanh tung van dong cong thanh ((pho ban) or (pha ban))*.