Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hoc sach » hoc sinh, hoc cac, hoc anh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
loc va » hoc va
vi cua » vai cua, di cua
ve cac » va cac, vien cac
luc va » duc va, tuc va
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: ((thuat sach) or (hoc sach)) ky lang xa hoi. hieu ve cac ((luc va) or (loc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (hoc sach)) ky lang xa hoi. hieu ve cac ((luc va) OR (loc va)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (hoc sach)) ky lang xa hoi. hieu ve cac ((luc va) or (loc va)) hanh vi cua te*.