Perhaps you should try some spelling variations:
thien chanh » thien chinh, hien hanh, tien thanh
thien thanh » tien thanh, thi thanh, hien hanh
khong cong » thong cong, khong cang, chong cong
dung cua » dung luan, dung cho
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien chanh) or (thien thanh)) - hanh ((huong cua) OR (dung cua)) khong cong anh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien chanh) OR (thien thanh)) - hanh ((huong cua) OR (dung cua)) khong cong anh tuan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien chanh) or (thien thanh)) - hanh ((huong cua) OR (dung cua)) khong cong anh tuan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien chanh) or (thien thanh)) - hanh ((huong cua) OR (dung cua)) khong cong anh tuan ban*.