Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tang hanh » tang thanh, dang hanh, nang hanh
thoi cua » hoi cua, thai cua, troi cua
tan hanh » tan thanh, toan hanh, tran hanh
cam duc » cam xuc, cao duc, pham duc
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
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: tu ((sach ky) or (sac ky)) nang xa hoi. hieu ve cam duc ((tan hanh) OR (tang hanh)) thoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu ve cam duc ((tan hanh) OR (tang hanh)) thoi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang xa hoi. hieu ve cam duc ((tan hanh) OR (tang hanh)) thoi cua triet*".