Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
cong tuan » cong tan, cong luan, cong thanh
dung cong » dung trong
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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