Perhaps you should try some spelling variations:
trinh cong » trinh dung
qua trinh » qua kinh
nhanh cac » nhanh bac, hanh cac, nhanh cay
doc manh » duc manh, doc hanh, dac manh
hanh han » hanh nhan, hanh phan, hanh san
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tap
han qua » hanh qua, hai qua, han cua
than » thanh, phan, tran

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: than doc manh - hanh han qua trinh cong dan ((nhanh cac) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: than doc manh - hanh han qua trinh cong dan ((nhanh cac) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: than doc manh - hanh han qua trinh cong dan ((nhanh cac) or (toan cau))*.