Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
nang hai » hang hai, nang tai, dang hai
va nang » van nang, da nang, cam nang
va chat » van chat, va phat, cao chat
nang ma » tang ma, sang ma, nang cao
va cham » va tham
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach y nang ma hoi. lieu ((va cham) or (va chat)) xuc va nang hai ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y nang ma hoi. lieu ((va cham) OR (va chat)) xuc va nang hai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach y nang ma hoi. lieu ((va cham) or (va chat)) xuc va nang hai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: doc sach y nang ma hoi. lieu ((va cham) or (va chat)) xuc va nang hai ((cua te) OR (cua tu))*.