Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
vu khach » vu khanh, vu khac, vay khach
thanh do » thanh de, thanh pho, thanh hoa
vu sach » vu bach, su sach
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca
cua tre » cua te, cuu tre, cua triet
do cua » doi cua, co cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (vu khach)) ty hang xa hoi. hieu ((van nam) or (van lam)) duc tan thanh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu khach)) ty hang xa hoi. hieu ((van nam) OR (van lam)) duc tan thanh do cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu khach)) ty hang xa hoi. hieu ((van nam) or (van lam)) duc tan thanh do cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu khach)) ty hang xa hoi. hieu ((van nam) or (van lam)) duc tan thanh do cua tre*.