Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
dua tren » dung tren
hoang xa » hoang ha, hoang va, hoang xuan
dan lai » dan loai, dan lap, dan lat
ve cham » va cham, ve chat, vu cham
sach tu » sach thu, sach ty, sach uu
hieu ve » hieu va, hieu van
cach tu » cach thuc
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau

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 tu) OR (cach tu)) hoang xa hoi. hieu ve cham tuc va dan lai ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach tu) OR (cach tu)) hoang xa hoi. hieu ve cham tuc va dan lai ((dua tren) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach tu) OR (cach tu)) hoang xa hoi. hieu ve cham tuc va dan lai ((dua tren) or (cuu tre))*".