Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
trinh chap » trinh chat, tranh chap, trinh chao
tinh tinh » trinh tinh, tinh ninh, tinh binh
cong lap » cong luan, cong lang, cong tac
tinh va » tich va, trinh van, trinh vat

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 xanh) or (chieu sang)) - tinh tinh va nhung cong lap trinh chap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sang)) - tinh tinh va nhung cong lap trinh chap*.