Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dinh dai » dinh dat, sinh dai, dinh dao
chat xuc » chat huu, cam xuc, chao xu
hieu van » hieu va, thien van, lieu va
van chat » cao chat
lang van » dang van, tang van, hoang van
sach ky » sac ky, sach y, sach ty
va dinh » van dinh, va kinh, va tinh
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
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: thuat sach ky ((nang xa) or (lang van)) hoi. hieu van chat xuc va dinh dai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky ((nang xa) OR (lang van)) hoi. hieu van chat xuc va dinh dai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky ((nang xa) or (lang van)) hoi. hieu van chat xuc va dinh dai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky ((nang xa) or (lang van)) hoi. hieu van chat xuc va dinh dai ((cua tre) OR (cuu tre))*.