Perhaps you should try some spelling variations:
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
trung dap » trung cap, trung dam, trung lap
trung dai » truong dai, truong dao, trung tam
bang cong » dang cong, bang song, hang cong
trinh ban » trinh han, trinh san, trinh dan
ban cau » bang cau, ban can, van cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) xanh - thanh ((trung dap) OR (trung dai)) bang cong trinh ban cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc thieu)) xanh - thanh ((trung dap) OR (trung dai)) bang cong trinh ban cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) xanh - thanh ((trung dap) OR (trung dai)) bang cong trinh ban cau*.