Perhaps you should try some spelling variations:
phuong van » phung van, phong van, phuong lan
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tang » hanh trang, anh tang, hanh mang
cuu toanh » cuu thanh, cuu tinh, cuu anh
cuu toan » cuu hoan, cua toan, huu toan
cua dang » cua cong, cua ban
van toan » van tuan, van tan, van thanh
toan ban » van 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 hien xanh - hanh tang ((cuu toan) or (((cuu toanh) or (cua dang)))) phuong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tang ((cuu toan) OR (((cuu toanh) OR (cua dang)))) phuong van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tang ((cuu toan) or (((cuu toanh) or (cua dang)))) phuong van toan ban*.