Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
hanh tang » hanh trang, anh tang, hanh mang
chua bang » chua nang, chua xang, thuat bang
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
chu bang » thu bang, chuc nang, chu quang
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 ((thieu sang) or (thieu khang)) - hanh tang ((chua bang) OR (chu bang)) cong danh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu khang)) - hanh tang ((chua bang) OR (chu bang)) cong danh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (thieu khang)) - hanh tang ((chua bang) OR (chu bang)) cong danh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu khang)) - hanh tang ((chua bang) OR (chu bang)) cong danh toan tap*.