Perhaps you should try some spelling variations:
thanh tri » thanh tra, thanh tai, chinh tri
thu sach » tu sach, thuat sach, thuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
tu cach » tu cac
tri cuu » tri cua, tra cuu, trinh cuu
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
anh van » anh va, thanh van, doanh van
luc va » duc va, tuc va, loc va
ly anh » le anh
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ly anh van hoi. hieu ve cam ((luc va) or (thuc dan)) thanh tri cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ly anh van hoi. hieu ve cam ((luc va) OR (thuc dan)) thanh tri cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ly anh van hoi. hieu ve cam ((luc va) or (thuc dan)) thanh tri cuu tre*.