Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tang xa » trang xa, tang ma, lang xa
va hanh » van hanh, va thanh, va danh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
y tang » ky tang, 6 tang, 7 tang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa

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

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