Perhaps you should try some spelling variations:
nang thai » nang tai, dang thai, lang thai
thai cuu » thai cua, tai cuc, thi cuc
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
thue va » thuc va, thuyet va, thuat va
cuu tre » cua tre, cau tren, cau treo
y lang » o lang, _ lang, tay lang

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 y lang xa hoi. ((hieu va) OR (lieu va)) cam ((thue va) or (thuc vat)) nang thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. ((hieu va) OR (lieu va)) cam ((thue va) OR (thuc vat)) nang thai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang xa hoi. ((hieu va) OR (lieu va)) cam ((thue va) or (thuc vat)) nang thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. ((hieu va) OR (lieu va)) cam ((thue va) or (thuc vat)) nang thai cuu tre*.