Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong luong » cong thuong, nang luong, cong dong
hoc trieu » hoc thieu, hoc tieu, hoc dieu
luong vat » luong va, luong van, luong tai
trung ha » trung hoc, trung tam, trung cap
quan cau » quang cao, toan cau, quan ha
toan ban » van ban
ha cong » hoa cong, va cong, ha dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trieu tinh - thanh trung ha cong luong vat ((quan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trieu tinh - thanh trung ha cong luong vat ((quan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - thanh trung ha cong luong vat ((quan cau) or (toan ban))*.