Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
nhung cong » dung cong, thong cong, hang cong
cong ngang » cong nhan, cong quang, cong lang
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
tran tuan » tran xuan, tran quang, tran thanh
phan cau » phan dau, phan cac, phan tu
toan tap » toan 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 thieu khang - thanh ((trung cua) or (tran tuan)) nhung cong ngang ((phan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - thanh ((trung cua) OR (tran tuan)) nhung cong ngang ((phan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - thanh ((trung cua) or (tran tuan)) nhung cong ngang ((phan cau) or (toan tap))*.