Perhaps you should try some spelling variations:
hanh sai » hanh san, hanh tai, danh sai
va trien » va truyen, va thiet, va tuyen
te sach » toc sach
lang ha » long ha
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
y lang » o lang, _ lang, tay lang
ha hoi » hoa hoi, ha noi, xa hoi
cua te » cua tu
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y lang ha hoi. hieu va am thuc va hanh sai ((va trien) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang ha hoi. hieu va am thuc va hanh sai ((va trien) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach y lang ha hoi. hieu va am thuc va hanh sai ((va trien) or (cua te))*.