Perhaps you should try some spelling variations:
cau triet » cau trieu, cua triet, va triet
su triet » su viet, su tien, ve triet
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
tuc van » thuc van, truc van, tuc va
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
sach 2 » sach y
ve cam » ve cham, ve cac, ve cai
ma hoi » mai hoi, xa hoi, ma hoa
2 nang » v nang
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: tu sach 2 nang ma hoi. hieu ((ve cam) or (va cam)) tuc van hanh hai ((cau triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach 2 nang ma hoi. hieu ((ve cam) OR (va cam)) tuc van hanh hai ((cau triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach 2 nang ma hoi. hieu ((ve cam) or (va cam)) tuc van hanh hai ((cau triet) or (su triet))*.