Perhaps you should try some spelling variations:
van trinh » van thinh, van tinh, dan trinh
thien van » thi van
lam truc » lam truoc, nam truc, lam thuoc
truc van » truc va, thuc van, truc ban
tu sach » thu sach, su sach, te sach
doi cua » dai cua, hoi cua
van lam » van nam
nang xa » lang xa, nang ma, mang xa
sach ky » sac ky, sach y, sach ty
vi cua » vai cua, di cua

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 ky ((nang xa) or (nang x)) hoi. thien van lam truc van trinh ((vi cua) or (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang x)) hoi. thien van lam truc van trinh ((vi cua) OR (doi cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang x)) hoi. thien van lam truc van trinh ((vi cua) or (doi cua)) tre*.