Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
thanh dai » thanh hai, thanh tai, thanh oai
hoang xa » hoang ha, hoang va, hoang xuan
te sach » toc sach
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cam cua » ca cua, nam cua, cau cua
va cam » va cham, va cac, va cao
hang x » nang x, chang xu, hang nxb
cua te » cua tu

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 ty ((hang x) or (hoang xa)) hoi. hieu va cam cua ban ((thanh dai) OR (thanh dat)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((hang x) OR (hoang xa)) hoi. hieu va cam cua ban ((thanh dai) OR (thanh dat)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((hang x) or (hoang xa)) hoi. hieu va cam cua ban ((thanh dai) OR (thanh dat)) cua te*".