Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dua tren » dung tren
tinh vai » tinh va, tinh hai, tinh bai
thu sach » tu sach, thuat sach, thuoc sach
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
cam duc » cam xuc, cao duc, pham duc
va tinh » may tinh
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((tang ma) or (lang xa)) hoi. hieu va cam duc va tinh vai ((dua tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((tang ma) OR (lang xa)) hoi. hieu va cam duc va tinh vai ((dua tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((tang ma) or (lang xa)) hoi. hieu va cam duc va tinh vai ((dua tren) or (cua triet))*.