Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo phap » thi phap
san thanh » ban thanh, van thanh, son thanh
thanh cau » thanh chau, thanh mau, nhanh cau
nhan tai » hang tai, van tai, toan tai
va thong » va thuong, va phuong, he thong
cong san » cong tac
thi hao » thi thao, thi hai, thi ha
han tai » hang tai, van tai, toan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi hao) or (theo phap)) tinh - ((han tai) or (nhan tai)) va thong cong san thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi hao) OR (theo phap)) tinh - ((han tai) OR (nhan tai)) va thong cong san thanh cau.
• Adding a wildcard symbol may retrieve word variants: ((thi hao) or (theo phap)) tinh - ((han tai) or (nhan tai)) va thong cong san thanh cau*.