Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » ban thanh, va tinh, le thanh
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang

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

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