Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
tran thang » tran thanh, tran thong, toan thang
cung trong » dung trong, vung trong, duong trong
cong trong » cong thuong, duong trong, cong trinh
hanh tran » hanh trang, thanh tran, hanh tram
mach luan » sach luan, mach tuan, hoach luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu khang - hanh tran thang ((cung trong) or (cong trong)) mach luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu khang - hanh tran thang ((cung trong) OR (cong trong)) mach luan van.
• Adding a wildcard symbol may retrieve word variants: toc thieu khang - hanh tran thang ((cung trong) or (cong trong)) mach luan van*.