Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trung lap » trung cap, truong lam, truong lop
trung dai » truong dai, truong dao, trung tam
dung cong » dung trong
chi xanh » chi anh, chi danh, chi hanh
tran ban » tranh ban, tran van, toan ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - thanh ((trung lap) or (trung dai)) ((dung cong) or (thong cong)) tan tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - thanh ((trung lap) OR (trung dai)) ((dung cong) OR (thong cong)) tan tran ban.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - thanh ((trung lap) or (trung dai)) ((dung cong) or (thong cong)) tan tran ban*.