Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
cua duc » cua tuc, cua nuoc, cua quoc
y lang » o lang, _ lang, tay lang
ve cam » ve cham, ve cac, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. hieu ve cam tuc van hanh vi ((cua thuoc) OR (cua duc))~.
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu ve cam tuc van hanh vi ((cua thuoc) or (cua duc))*.