Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
mot chieu » doi chieu, ho chieu
tong cong » trong cong, cong cong, dung cong
tinh cua » trinh cua, sinh cua, tinh chat
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan ban » toan ban, tang ban, van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (hoc hien)) sach - hanh ((trinh quan) or (tinh cua)) tong cong van tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc hien)) sach - hanh ((trinh quan) OR (tinh cua)) tong cong van tan ban.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc hien)) sach - hanh ((trinh quan) or (tinh cua)) tong cong van tan ban*.