Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung pha » trung phan, trung phat, trung ha
doc hieu » toc thieu, hoc thieu, hoc hien
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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 xanh - thanh trung pha ((nhung cong) OR (thong cong)) tam ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh trung pha ((nhung cong) OR (thong cong)) tam ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh trung pha ((nhung cong) OR (thong cong)) tam ((than cap) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung pha ((nhung cong) OR (thong cong)) tam ((than cap) or (khan cap))*.