Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » theo chieu, hoc thieu, doi chieu
than cap » khan cap, thanh lap, than cua
vat con » va con, vat co, vit con
con ban » con bang, co ban, can ban

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: ho chieu sang - ((hanh trinh) OR (thanh trung)) cua vat con ban ((than cap) OR (thanh cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((hanh trinh) or (thanh trung)) cua vat con ban ((than cap) OR (thanh cac))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((hanh trinh) or (thanh trung)) cua vat con ban ((than cap) OR (thanh cac))*.