Perhaps you should try some spelling variations:
doanh chien » doan thien, hoach chien, khanh chien
tham thuc » nham thuc, pham thuc, tam thuc
nuoc sach » nguoi sach, cuoc cach, cuon sach
vat doanh » van doanh, vay doanh, va doanh
chien cau » chien dau, hien cau, khien cau
hoc sach » hoc sinh, hoc cac, hoc anh
thi hang » thi hanh, thi nang, thi hong
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
hang xa » hoang xa, hang va, hang ca
cau tre » cau tren, cau treo, cau tra

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nuoc sach) or (hoc sach)) thi hang xa hoi. hieu van tham thuc vat doanh chien cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (hoc sach)) thi hang xa hoi. hieu van tham thuc vat doanh chien cau tre.
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (hoc sach)) thi hang xa hoi. hieu van tham thuc vat doanh chien cau tre*.