Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
cau treo » cau theo, cau tren, cau trieu
dang hai » dang khai, hang hai, dung hai
va dang » van dang, va nang, va lang
cam tuc » cam xuc, cam tu, nam thuc
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
vu sach » vu bach, su sach, vu khach
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (vu sach)) ly nang xa hoi. hieu va cam tuc va dang hai ((cau treo) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (vu sach)) ly nang xa hoi. hieu va cam tuc va dang hai ((cau treo) OR (cau triet)).
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (vu sach)) ly nang xa hoi. hieu va cam tuc va dang hai ((cau treo) or (cau triet))*.