Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang hoa » nang hoat, hang hoa, nang hoc
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
hoa hoi » khoa hoi, hoa hoc, hoa doi
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
loc va » hoc va, luc va
di cau » da cau, diem cau

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 hoa hoi. hieu ((ve cam) or (ve cac)) loc va hanh di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang hoa hoi. hieu ((ve cam) OR (ve cac)) loc va hanh di cau tren.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang hoa hoi. hieu ((ve cam) or (ve cac)) loc va hanh di cau tren*.