Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
ba benh » va benh, bo benh, bach benh
benh di » benh dai, ben di, benh da
cua tre » cua te, cuu tre, cua triet
xuc ba » xuc ban
di cua » dai cua, doi 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: thu ((sach ky) or (sach y)) nang xa hoi. ((hieu van) OR (hieu va)) cam xuc ba benh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) nang xa hoi. ((hieu van) OR (hieu va)) cam xuc ba benh di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sach y)) nang xa hoi. ((hieu van) OR (hieu va)) cam xuc ba benh di cua tre*".