Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
lanh hai » manh hai, thanh hai, lang chai
hai cau » hai chau, hai chu, hai hau
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
va lam » van lam, va lap
tuc va » thuc va, truc va, duc va
ma hoi » xa hoi, ma hoa, me hoi

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