Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang ma » tang ma, sang ma, nang cao
truc va » thuc va, thuc vat, trung va
hanh va » hang va, hanh vi
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly nang ma hoi. lieu va cac ((duc va) or (truc va)) hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang ma hoi. lieu va cac ((duc va) OR (truc va)) hanh va su triet.
• Adding a wildcard symbol may retrieve word variants: su sach ly nang ma hoi. lieu va cac ((duc va) or (truc va)) hanh va su triet*.