Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cham luc » cham soc, nhan luc, cham cuu
ban hanh » ban hang
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
nang co » nang cao, nang doc, nang noi
sach ty » sach y, sach tu, sach thu
va hanh » van hanh, va thanh, dao hanh
ty nang » ky nang, ty xang, ty hang
va danh » va dinh, va dan, dia danh
va cau » van cau, va cac, va dau

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 ty nang co hoc. hieu ve cham luc ((((va hanh) OR (ban hanh))) or (va danh)) va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang co hoc. hieu ve cham luc ((((va hanh) OR (ban hanh))) OR (va danh)) va cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty nang co hoc. hieu ve cham luc ((((va hanh) OR (ban hanh))) or (va danh)) va cau tren*".