Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, dua tren
xuc van » duc van, luc van, vuc van
sach ky » sac ky, sach y, sach kem
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
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: so ((sach ky) or (sach ty)) lang xa hoi. hieu ve cam xuc van hanh lai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sach ty)) lang xa hoi. hieu ve cam xuc van hanh lai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) or (sach ty)) lang xa hoi. hieu ve cam xuc van hanh lai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) or (sach ty)) lang xa hoi. hieu ve cam xuc van hanh lai ((cua tre) OR (cua triet))*.