Perhaps you should try some spelling variations:
khang xa » hang ca, lang xa, hang ha
hieu van » hieu va, thien van, lieu va
te sach » toc sach
khang a » chang ha, khan gia, khang cu
van cau » van dau, van hau, van chat
truc va » thuc va, trung va
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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 thieu ((khang xa) OR (khang a)) hoi. hieu van cau ((truc va) or (thuc vat)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu ((khang xa) OR (khang a)) hoi. hieu van cau ((truc va) OR (thuc vat)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu ((khang xa) OR (khang a)) hoi. hieu van cau ((truc va) or (thuc vat)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach thieu ((khang xa) OR (khang a)) hoi. hieu van cau ((truc va) or (thuc vat)) hanh vi cuu tre*.