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
bang cong » dang cong, hang cong, dung cong
bang song » nang song
danh toan » manh toan, anh toan, dan toan
mang cua » manh cua, dung cua, ban cua
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 ((bang cong) OR (bang song)) danh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (thieu khang)) - hanh mang cua ((bang cong) OR (bang song)) danh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) or (thieu khang)) - hanh mang cua ((bang cong) OR (bang song)) danh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (thieu khang)) - hanh mang cua ((bang cong) OR (bang song)) danh toan tap*.