Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu
hanh han » hanh nhan, hanh phan, hanh san
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
nhan tai » hang tai, van tai
toan tai » toan tap, doanh tai, toan ban
han va » hang va, hanh va, nhan va

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 (hoc hien)) sang - hanh han va thong cong dan ((nhan tai) OR (toan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (hoc hien)) sang - hanh han va thong cong dan ((nhan tai) or (toan tai))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (hoc hien)) sang - hanh han va thong cong dan ((nhan tai) or (toan tai))*.