Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, nhanh lang
cong manh » cong danh, duong manh, cong thanh
mang cua » manh cua, dung cua, ban cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu lang) or (thieu khang)) - hanh mang cua dung ((cong manh) or (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (thieu khang)) - hanh mang cua dung ((cong manh) OR (cong tan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (thieu khang)) - hanh mang cua dung ((cong manh) or (cong tan)) toan tap*.