Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
duoc va » nuoc va, duc va, duoc ma
va hang » van hang, va nang, va lang
cua tre » cuu tre, cua triet, dua tren
ve tao » ve bao, de tao, ve tac
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y ((nang xa) OR (nang ma)) hoi. hieu ve tao duoc va hang va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((nang xa) OR (nang ma)) hoi. hieu ve tao duoc va hang va ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y ((nang xa) OR (nang ma)) hoi. hieu ve tao duoc va hang va ((cua tre) or (cua te))*".