Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
va cam » va cham, va cac, va cao
luc va » duc va, loc va
sach v » sach va, sach y, sach 2
tuc va » truc va, tuc xa, duc va
v nang » va nang, vu nang, van nang
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: te sach v nang xa hoi. hieu va cam ((luc va) or (((tuc va) OR (thuc va)))) thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. hieu va cam ((luc va) OR (((tuc va) OR (thuc va)))) thanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. hieu va cam ((luc va) or (((tuc va) OR (thuc va)))) thanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. hieu va cam ((luc va) or (((tuc va) OR (thuc va)))) thanh di cua tre*.