Perhaps you should try some spelling variations:
xach tai » xach tay, xanh tai, tich tai
nam thuc » nam thuoc, am thuc, nam thu
sach tai » sach bai, sach tham, sach dao
cong xa » cong xay, cong xua, cong ha
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
dan vai » dan tai, dan vat, den vai
cuu tre » cua tre, cau tren, cau treo
va nam » van nam, ha nam, va nay
dan va » doan va, dan ca, ban va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((xach tai) or (sach tai)) cong xa hoi. hieu va nam thuc va ((dan vai) OR (dan va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((xach tai) OR (sach tai)) cong xa hoi. hieu va nam thuc va ((dan vai) OR (dan va)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((xach tai) or (sach tai)) cong xa hoi. hieu va nam thuc va ((dan vai) OR (dan va)) cuu tre*".