Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trinh » canh tranh, hanh chinh
tong thong » thong thong, dong thong, cong thong
thong than » thong thanh, thong phan, thong nhan
hieu lang » chieu sang, hieu quang, nhieu tang
than tuan » thanh tuan, tran tuan, thanh xuan
hoc hieu » hoc thieu, hoc hien, doc hieu
cua tong » cua cong, cua dong, cua nong
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - ((hanh trinh) or (thanh trung)) cua tong thong than tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - ((hanh trinh) OR (thanh trung)) cua tong thong than tuan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - ((hanh trinh) or (thanh trung)) cua tong thong than tuan ban*.