Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
lang van » dang van, tang van, hoang van
thuc van » thuc vat, thuc dan, thuc va
va cham » va chat, va tham
tuc van » truc van, tuc va, duc van
cuu tre » cua tre, cau tren, cau treo
van hoi » van hoa, van hoc, van hoe
y lang » o lang, _ lang, tay lang
ve cam » ve cham, ve cac, va cam
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y lang van hoi. hieu ((ve cam) or (va cham)) ((tuc van) or (thuc van)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y lang van hoi. hieu ((ve cam) OR (va cham)) ((tuc van) OR (thuc van)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y lang van hoi. hieu ((ve cam) or (va cham)) ((tuc van) or (thuc van)) hanh vi cuu tre*.