Perhaps you should try some spelling variations:
hanh thinh » hanh chinh, hanh trinh, hanh tinh
trung hang » trung thang, trung hung, trung tang
thinh dac » thinh duc, trinh dac, thinh doan
dac trung » duc trung, cac truong, tai trung
chieu ca » chieu cao, chieu day, nhieu cau
va thang » van thang, va thanh, va thong
thang ca » thang cua, hang ca, tang ca
hieu ca » hieu cac, hieu cua, hieu va

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 ca) or (chieu ca)) - hanh thinh dac trung hang va thang ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu ca) OR (chieu ca)) - hanh thinh dac trung hang va thang ca.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu ca) or (chieu ca)) - hanh thinh dac trung hang va thang ca*.