Perhaps you should try some spelling variations:
thuong dong » phuong dong, tuong dong, chuong dong
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trung can » trung van, trong can, trung ca
trung cap » truong cao, trung tam
dong tan » duong tan, dong tai, dong san
tan hanh » tan thanh, tang hanh, toan hanh
hanh va » hang va, hanh vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - thanh ((trung can) or (trung cap)) thuong dong tan hanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh ((trung can) OR (trung cap)) thuong dong tan hanh va.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh ((trung can) or (trung cap)) thuong dong tan hanh va*.