Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cham luc » cham soc, nhan luc, cham cuu
tu sach » thu sach, su sach, te sach
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuoc sach)) ky lang xa hoi. hieu ve cham luc ((va danh) or (va dinh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) ky lang xa hoi. hieu ve cham luc ((va danh) OR (va dinh)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ky lang xa hoi. hieu ve cham luc ((va danh) or (va dinh)) vi cua te*.