Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau tren » dau tren, ca tren, cau treo
ve chat » va chat, van chat
vu cham » va cham, vu kham, tu cham
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
hanh ve » hanh vi, hanh va, hanh kem
nang co » nang cao, nang doc, nang noi
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: thu sach ky nang co hoc. hieu ((ve chat) or (vu cham)) xuc va hanh ve ((cau tren) OR (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang co hoc. hieu ((ve chat) OR (vu cham)) xuc va hanh ve ((cau tren) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang co hoc. hieu ((ve chat) or (vu cham)) xuc va hanh ve ((cau tren) OR (cu tren))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang co hoc. hieu ((ve chat) or (vu cham)) xuc va hanh ve ((cau tren) OR (cu tren))*.