Perhaps you should try some spelling variations:
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
hanh hai » thanh hai, nhanh hai, hang hai
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
van cac » van hac, van cau, van bac
van hoi » van hoc, van hoe, van loi
cuu tre » cua tre, cau tren, cau treo
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 tay lang ((van hoi) OR (van hoa)). hieu van cac duc van hanh hai ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tay lang ((van hoi) OR (van hoa)). hieu van cac duc van hanh hai ((cua te) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tay lang ((van hoi) OR (van hoa)). hieu van cac duc van hanh hai ((cua te) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach tay lang ((van hoi) OR (van hoa)). hieu van cac duc van hanh hai ((cua te) or (cuu tre))*.