Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung cua » truong cua, trung tuan, trung cap
cong tinh » cong trinh, cong vinh, long tinh
ho chieu » theo chieu, hoc thieu, doi chieu
vat cong » bat cong, sat cong, vat con
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh trung cua vat cong tinh ((toan tap) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung cua vat cong tinh ((toan tap) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung cua vat cong tinh ((toan tap) or (van ban))*.