Perhaps you should try some spelling variations:
hieu vay » hieu va, hieu van, chieu day
vay luan » ly luan, von luan, bai luan
luan tuc » luan thuc, luat tuc, luan tac
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
va tinh » may tinh
tinh di » tinh doi, trinh di, tinh da
cuu tre » cau tren, cau treo
cua tre » cua triet, dua tren, cua thep
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
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: te sach y nang ma hoi. hieu vay luan tuc va tinh di ((cuu tre) or (((cua tre) or (cua te))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu vay luan tuc va tinh di ((cuu tre) OR (((cua tre) OR (cua te)))).
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu vay luan tuc va tinh di ((cuu tre) or (((cua tre) or (cua te))))*.