Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
thi chieu » thi chien, thi hieu, theo chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cong vang » cong lang, cong quang, cong ngang
va thong » va thuong, va phuong, he thong
toan ban » van ban
tinh va » tich va, trinh van, trinh vat
tan ban » tang ban, van ban, can ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (thi chieu)) xanh - hanh tinh va thong cong vang ((tan ban) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (thi chieu)) xanh - hanh tinh va thong cong vang ((tan ban) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (thi chieu)) xanh - hanh tinh va thong cong vang ((tan ban) OR (toan ban))*.