Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
danh hai » dang hai, lanh hai, manh hai
hieu van » thien van, hieu ve
cam tuc » cam xuc, cam tu, nam thuc
hai cau » hai chau, hai chu, hai hau
va danh » va dinh, va dan, va hanh
so sanh » do sanh
sanh ly » sinh ly, doanh ly, khanh ly
hieu va » hieu qua
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
tuc va » thuc va, truc va, tuc xa

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