Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
dau thuc » dan thuc, dai thuc, dam thuc
thuc van » thuc vat, thuc dan, thuc va
sach thu » sach thue, sach thieu, sach tham
hanh tai » hang tai, han tai, hinh tai
sach ty » sach y, sach tu, xach tay
nang xa » nang x, lang xa, nang ma
cu tren » tu tren, dua tren
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach thu)) nang xa hoi. lieu va dau thuc van ((hanh tai) OR (thanh tai)) cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang xa hoi. lieu va dau thuc van ((hanh tai) OR (thanh tai)) cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach thu)) nang xa hoi. lieu va dau thuc van ((hanh tai) OR (thanh tai)) cu tren".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang xa hoi. lieu va dau thuc van ((hanh tai) OR (thanh tai)) cu tren*.