Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua trong » cua truong, qua trong, ca trong
cua trung » cua truong, xuan trung, cua nhung
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
phan dau » phan tu, hang dau

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 nang - canh manh ((cua trong) or (cua trung)) cong toan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu nang - canh manh ((cua trong) OR (cua trung)) cong toan phan dau*.