Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
ky lang » ky dang, ky tang, tay lang
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ha » hieu hoa, hieu va, hieu ca
hai cua » thai cua, dai cua, hoi cua

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 ((ky lang) or (ky nang)) hoa hoi. hieu ha nam thuc dan hanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky nang)) hoa hoi. hieu ha nam thuc dan hanh hai cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (ky nang)) hoa hoi. hieu ha nam thuc dan hanh hai cua triet*.