Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh dao » lanh dao, thanh dat, thanh dam
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
truc va » thuc vat, trung va
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
sach 2 » sach y
2 nang » v nang
dao su » dao suu, dan su, cao su

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 2 nang ma hoi. hieu ve cam ((truc va) or (thuc va)) hanh dao su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach 2 nang ma hoi. hieu ve cam ((truc va) OR (thuc va)) hanh dao su triet.
• Adding a wildcard symbol may retrieve word variants: su sach 2 nang ma hoi. hieu ve cam ((truc va) or (thuc va)) hanh dao su triet*.