Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong cong » trong cong, tong cong, thong thong
chieu cac » chieu cao, thieu cac, chieu sach
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
hieu cac » hieu luc, hieu va, hieu van
san chon » san cho, san chang, nang chon
san choi » san chi, san cho, van choi

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 cac) or (chieu cac)) - thanh trung cua thong cong ((san chon) OR (san choi)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu cac) OR (chieu cac)) - thanh trung cua thong cong ((san chon) OR (san choi)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu cac) or (chieu cac)) - thanh trung cua thong cong ((san chon) OR (san choi)) tu".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu cac) or (chieu cac)) - thanh trung cua thong cong ((san chon) OR (san choi)) tu*.