Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
cau tren » dau tren, ca tren, cau treo
nam xuc » cam xuc, nam xua, nam thuc
va dinh » van dinh, va kinh, va tinh
dinh ve » dinh ket, dinh van
cu tren » tu tren, dua tren
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (thuat sach)) ky nang x ho. hieu van nam xuc va dinh ve ((cau tren) OR (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thuat sach)) ky nang x ho. hieu van nam xuc va dinh ve ((cau tren) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thuat sach)) ky nang x ho. hieu van nam xuc va dinh ve ((cau tren) OR (cu tren))".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thuat sach)) ky nang x ho. hieu van nam xuc va dinh ve ((cau tren) OR (cu tren))*.