Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
than tai » thanh tai, toan tai, nhan tai
sang lao » sang tao, sang lap, tang lao
lao khoa » lo khoa, da khoa, ly khoa
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
han tai » hang tai, nhan tai, van tai
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
lieu ha » lieu nha, lieu va, liem ha
ky sang » ky nang, ky dang, ky tang

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 ky sang lao khoa. lieu ha nam thuc va ((han tai) or (than tai)) ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang lao khoa. lieu ha nam thuc va ((han tai) OR (than tai)) ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang lao khoa. lieu ha nam thuc va ((han tai) or (than tai)) ((cua triet) or (cuu tre))*.