Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua trong » cua truong, qua trong, ca trong
cua trung » cua truong, xuan trung, cua nhung
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan 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: toc ((thi thanh) or (thien chanh)) - hanh tranh ((cua trong) OR (cua trung)) cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thi thanh) OR (thien chanh)) - hanh tranh ((cua trong) OR (cua trung)) cong van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thi thanh) or (thien chanh)) - hanh tranh ((cua trong) OR (cua trung)) cong van toan ban".
• Adding a wildcard symbol may retrieve word variants: toc ((thi thanh) or (thien chanh)) - hanh tranh ((cua trong) OR (cua trung)) cong van toan ban*.