Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
van nhuong » van chuong, van phuong, van huong
hoc thieu » toc thieu, hoc hien
canh tinh » hanh tinh, manh tinh, canh tranh
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
phan cau » phan dau, phan cac, phan tu

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 tinh - canh tinh ((van nhuong) or (va nhung)) cong toan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - canh tinh ((van nhuong) OR (va nhung)) cong toan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh tinh ((van nhuong) or (va nhung)) cong toan phan cau*.