Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
cam truc » cau truc, nam truc, lam truoc
danh hai » dang hai, lanh hai, manh hai
hieu van » hieu va, thien van
hai cau » hai chau, hai chu, hai hau
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
so sanh » do sanh
sanh ly » sinh ly, doanh ly, khanh ly
hieu ve » hieu va
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ly nang ma hoi. ((((hieu van) or (hieu ve))) or (lieu va)) cam truc va danh hai cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ly nang ma hoi. ((((hieu van) OR (hieu ve))) OR (lieu va)) cam truc va danh hai cau theo.
• Adding a wildcard symbol may retrieve word variants: so sanh ly nang ma hoi. ((((hieu van) or (hieu ve))) or (lieu va)) cam truc va danh hai cau theo*.