Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
dau truc » cau truc, dai truc, doan truc
truc van » truc va, thuc van, truc ban
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
va dau » va dao
ma hoi » mai hoi, xa hoi, ma hoa
di cuu » di cau, dinh cuu
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua

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 ty nang ma hoi. lieu va dau truc van thanh ((di cuu) or (((di cua) OR (de cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoi. lieu va dau truc van thanh ((di cuu) OR (((di cua) OR (de cua)))) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ma hoi. lieu va dau truc van thanh ((di cuu) or (((di cua) OR (de cua)))) tre*".