Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
manh hai » lanh hai, minh hai, thanh hai
danh hai » dang hai, lanh hai, danh hau
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
cam tuc » cam xuc, cam tu, nam thuc
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ly hang, ly vang, ly quang
van cam » van nam, van lam, van cau

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 ((ly nang) OR (ky nang)) mai hoi. hieu van cam tuc xa ((danh hai) or (manh hai)) cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly nang) OR (ky nang)) mai hoi. hieu van cam tuc xa ((danh hai) OR (manh hai)) cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ly nang) OR (ky nang)) mai hoi. hieu van cam tuc xa ((danh hai) or (manh hai)) cau treo".
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) OR (ky nang)) mai hoi. hieu van cam tuc xa ((danh hai) or (manh hai)) cau treo*.