Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cuu tre » cua tre, cau tren, cau treo
xa hanh » xa thanh, xa khanh, va hanh
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
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: su ((sac ky) or (sach ty)) nang ma hoi. hieu ve cam tuc xa hanh vi ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (sach ty)) nang ma hoi. hieu ve cam tuc xa hanh vi ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su ((sac ky) or (sach ty)) nang ma hoi. hieu ve cam tuc xa hanh vi ((cua triet) or (cuu tre))*.