Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
va dauh » va danh, va doanh
tai roi » lai roi, tai hoi, tai loi
hieu ve » hieu va, hieu van
cuu tre » cau tren, cau treo
ve cam » ve cham, ve cac, va cam
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang tai roi. hieu ve cam xuc ((va dauh) or (va dau)) dai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang tai roi. hieu ve cam xuc ((va dauh) OR (va dau)) dai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang tai roi. hieu ve cam xuc ((va dauh) or (va dau)) dai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang tai roi. hieu ve cam xuc ((va dauh) or (va dau)) dai ((cua tre) OR (cuu tre))*.