Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
binh cuu » dinh cuu, vinh cuu, binh chu
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
tu san » thu san, tu ban, tu can

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

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