Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh vat » trinh van, trinh luat, sinh vat
dang cong » dung cong
vat dang » van dang, vat dung, va dang
cong tac » cong ty
tac phat » tac pham, tam phat, tan phat
phat dau » phan dau, pham dau, phap dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu quang - canh trinh vat dang cong tac phat dau~.
• Adding a wildcard symbol may retrieve word variants: toc thieu quang - canh trinh vat dang cong tac phat dau*.