Perhaps you should try some spelling variations:
thien van » thi van
cua viet » ca viet, hoa viet, cua vat
toc sach » hoc sach, doc sach, thuoc sach
hang di » hang doi, hang vi, hang dien
va hang » van hang, va nang, va lang
ly nang » ky nang, ly hang, ly vang
cam lo » nam lo, cam ly, cam o
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ly nang x hoi. thien van ((cam loc) or (cam lo)) va hang di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ly nang x hoi. thien van ((cam loc) OR (cam lo)) va hang di cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ly nang x hoi. thien van ((cam loc) or (cam lo)) va hang di cua viet*".