Perhaps you should try some spelling variations:
thu sac » thu sach, thu san, thu xac
truc va » thuc va, thuc vat, trung va
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
hieu va » hieu qua
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu van
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang ma hoi. ((hieu ve) or (((hieu va) or (lieu va)))) cau truc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang ma hoi. ((hieu ve) OR (((hieu va) OR (lieu va)))) cau truc va danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang ma hoi. ((hieu ve) or (((hieu va) or (lieu va)))) cau truc va danh vi cua te*.