Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dua tren » dung tren
vat hanh » vat thanh, van hanh, va hanh
va cham » va chat, va tham
hanh va » hang va, hanh vi
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly nang ma hoa. hieu ((ve cac) or (va cham)) thuc vat hanh va ((dua tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly nang ma hoa. hieu ((ve cac) OR (va cham)) thuc vat hanh va ((dua tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: vu sach ly nang ma hoa. hieu ((ve cac) or (va cham)) thuc vat hanh va ((dua tren) or (cua triet))*.