Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cham tuc » nham thuc, pham thuc, tham thuc
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
va dinh » van dinh, va kinh, va tinh
dau cua » dai cua, cau cua, dan cua
day cua » dai cua
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang xa hoi. ((thien van) OR (thi van)) cham tuc va dinh ((dau cua) or (day cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. ((thien van) OR (thi van)) cham tuc va dinh ((dau cua) OR (day cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang xa hoi. ((thien van) OR (thi van)) cham tuc va dinh ((dau cua) or (day cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. ((thien van) OR (thi van)) cham tuc va dinh ((dau cua) or (day cua)) tre*.