Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
cua nhung » va nhung
tinh cua » trinh cua, sinh cua, tinh chat
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - nhanh tinh cua nhung cong ((dan toan) or (dan chan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - nhanh tinh cua nhung cong ((dan toan) OR (dan chan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - nhanh tinh cua nhung cong ((dan toan) or (dan chan)) cao*.