Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
toc sach » hoc sach, doc sach, thuoc sach
cam thuc » am thuc, nam thuc, cam thu
cau tren » cu tren, dau tren, ca tren
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ve cam » ve cham, ve cac, va cam
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: toc sach _ lang xa hoi. hieu ve cam thuc va hanh vi ((cua te) or (((cau tren) or (cau triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach _ lang xa hoi. hieu ve cam thuc va hanh vi ((cua te) OR (((cau tren) OR (cau triet)))).
• Adding a wildcard symbol may retrieve word variants: toc sach _ lang xa hoi. hieu ve cam thuc va hanh vi ((cua te) or (((cau tren) or (cau triet))))*.