Perhaps you should try some spelling variations:
thanh dat » thanh hai, thanh van, thanh ha
ty chang » ty hang, ty chung, thi chang
chang xu » chang xue, chao xu, thong xu
te sach » toc sach
hieu va » hieu qua
sach ty » sach y, sach tu, sach thu
cam cua » ca cua, nam cua, cau cua
xu hoi » xa hoi, lu hoi, vu hoi
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 chang xu hoi. ((hieu va) or (lieu va)) cam cua ban ((thanh dat) OR (thanh san)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty chang xu hoi. ((hieu va) OR (lieu va)) cam cua ban ((thanh dat) OR (thanh san)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty chang xu hoi. ((hieu va) or (lieu va)) cam cua ban ((thanh dat) OR (thanh san)) cua te*".