Perhaps you should try some spelling variations:
thien van » thi van
su triet » su viet, su tien, ve triet
luoc van » luoc can, luoc va, luot van
hang di » hang doi, hang vi, hang dien
luc van » luu van, duc van, luc va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
xang ma » tang ma, sang ma, rang ma
van cau » van dau, van hau, van chat
di su » doi su, ki su, da 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 ty ((xang ma) OR (nang ma)) hoi. thien van cau ((luc van) or (luoc van)) hang di su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((xang ma) OR (nang ma)) hoi. thien van cau ((luc van) OR (luoc van)) hang di su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((xang ma) OR (nang ma)) hoi. thien van cau ((luc van) or (luoc van)) hang di su triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((xang ma) OR (nang ma)) hoi. thien van cau ((luc van) or (luoc van)) hang di su triet*.