Perhaps you should try some spelling variations:
xanh di » danh di, vanh dai, xanh tai
va xanh » va danh, va hanh, va anh
hieu su » hieu sau, tieu su, hieu so
hieu vu » hieu va, hieu ve, dieu vu
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach vay
sach 2 » sach y
soc va » hoc va, loc va, doc va
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach v) or (sach 2)) nang x hoi. ((hieu vu) OR (hieu su)) cham soc va xanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach 2)) nang x hoi. ((hieu vu) OR (hieu su)) cham soc va xanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach 2)) nang x hoi. ((hieu vu) OR (hieu su)) cham soc va xanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach 2)) nang x hoi. ((hieu vu) OR (hieu su)) cham soc va xanh di cua tre*.