Perhaps you should try some spelling variations:
thuat trinh » thuyet trinh, thuat trong, thuat kinh
thuat tinh » thuat kinh, thuat hinh, thuat dinh
nhung cong » dung cong, thong cong, hang cong
chua tinh » cua tinh, cha tinh, chua benh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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: theo ((chua tinh) or (((thuat tinh) OR (thuat trinh)))) - hanh tang cua nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua tinh) OR (((thuat tinh) OR (thuat trinh)))) - hanh tang cua nhung cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua tinh) or (((thuat tinh) OR (thuat trinh)))) - hanh tang cua nhung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chua tinh) or (((thuat tinh) OR (thuat trinh)))) - hanh tang cua nhung cong tan toan cau*.