Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thieu lang » hieu lang, thieu khang, chieu sang
anh truong » manh truong, anh thuong, anh trong
truong va » truong dai, truong cao, truong dao
dung cong » dung trong
tac toan » tap toan, hach toan, tich toan
tam toan » tap toan, tam than, pham toan
va dung » van dung, va duong, vat dung

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 lang) or (thieu quang)) - anh truong va dung cong ((tac toan) or (tam toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu lang) OR (thieu quang)) - anh truong va dung cong ((tac toan) OR (tam toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu lang) or (thieu quang)) - anh truong va dung cong ((tac toan) or (tam toan)) cao*.