Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh han » hanh nhan, hanh phan, hanh san
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan ban
van tai » von tai, van tuan
han va » hang va, hanh va, nhan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - hanh han va thong cong dan ((van tai) or (toan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh han va thong cong dan ((van tai) OR (toan tai))*.