Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
xa thanh » va thanh, ha thanh, ta thanh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nam tuc » nam thuc, nam truc, nam thuoc
hieu va » hieu qua
nang ma » tang ma, sang ma, nang cao
cu tren » tu tren, dua tren
nam tu » nam thu, nam thuc
ma hoi » mai hoi, xa hoi, ma hoa
vai cu » vai cua, van cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoi. ((hieu va) OR (lieu va)) ((nam tuc) or (nam tu)) xa thanh vai cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((hieu va) OR (lieu va)) ((nam tuc) OR (nam tu)) xa thanh vai cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((hieu va) OR (lieu va)) ((nam tuc) or (nam tu)) xa thanh vai cu tren".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu va) OR (lieu va)) ((nam tuc) or (nam tu)) xa thanh vai cu tren*.