Perhaps you should try some spelling variations:
kho tang » cao tang
te sach » toc sach
truc va » thuc va, thuc vat, trung va
tai cua » thai cua, tai cuc, tri cua
thu san » thuy san, thu ban, phu san
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
han tai » hang tai, nhan tai, van tai
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
cua te » cua tu

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) or (thu san)) kho tang xa hoi. hieu va cam ((luc va) or (truc va)) han tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu san)) kho tang xa hoi. hieu va cam ((luc va) OR (truc va)) han tai cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu san)) kho tang xa hoi. hieu va cam ((luc va) or (truc va)) han tai cua te*.