Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tran tuan » tran xuan, tran thanh, tranh luan
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
hoc tieu » hoc dieu, hoc sieu, hoc tieng
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) or (hoc tieu)) tinh - manh ((tran tuan) OR (tran quang)) nhung cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc tieu)) tinh - manh ((tran tuan) OR (tran quang)) nhung cong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc tieu)) tinh - manh ((tran tuan) OR (tran quang)) nhung cong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc tieu)) tinh - manh ((tran tuan) OR (tran quang)) nhung cong manh toan cau*.