Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
thanh lai » thanh hai, thanh lap, thanh loi
cam thuc » am thuc, nam thuc, cam thu
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, cua triet
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
vu sach » vu bach, su sach, vu khach
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 sach) or (vu sach)) ty nang xa hoi. hieu ve cam thuc va thanh lai ((cua tre) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) ty nang xa hoi. hieu ve cam thuc va thanh lai ((cua tre) OR (cau triet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ty nang xa hoi. hieu ve cam thuc va thanh lai ((cua tre) or (cau triet))*.