Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh hang » manh thang, manh hung, minh hang
duc manh » suc manh, duc anh, duc minh
cam duc » cam xuc, cao duc, pham duc
cuu tre » cua tre, cau tren, cau treo
hang di » hang doi, hang vi, hang dien
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
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 ky ((nang xa) or (lang xa)) hoi. hieu ve cam duc manh hang di ((cuu tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (lang xa)) hoi. hieu ve cam duc manh hang di ((cuu tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (lang xa)) hoi. hieu ve cam duc manh hang di ((cuu tre) or (cua triet))*.