Perhaps you should try some spelling variations:
thien van » thi van
hanh thai » nhanh thai, hinh thai, hanh tai
thai cuu » thai cua, tai cuc, thi cuc
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, lieu va
cuu tre » cua tre, cau tren, cau treo
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va
danh xa » danh ca, dinh xa, canh xa
ky danh » ky anh, ky dang
sai ky » sac ky
su sai » su tai, su hai, su dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky danh xa hoi. ((hieu ve) or (((hieu van) OR (thien van)))) cam duc van hanh thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky danh xa hoi. ((hieu ve) OR (((hieu van) OR (thien van)))) cam duc van hanh thai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky danh xa hoi. ((hieu ve) or (((hieu van) OR (thien van)))) cam duc van hanh thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sai ky danh xa hoi. ((hieu ve) or (((hieu van) OR (thien van)))) cam duc van hanh thai cuu tre*.