Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
hanh di » hanh vi, hanh de, hang di
va tham » van tham, va cham, va thanh
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
v nang » va nang, vu nang, van nang
loc va » luc va
di cuu » di cau, di cua, dinh cuu

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) OR (thuat sach)) v nang xa hoi. lieu va tham ((hoc va) or (loc va)) hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) v nang xa hoi. lieu va tham ((hoc va) OR (loc va)) hanh di cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) v nang xa hoi. lieu va tham ((hoc va) or (loc va)) hanh di cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuat sach)) v nang xa hoi. lieu va tham ((hoc va) or (loc va)) hanh di cuu tre*.