Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
cap nang » cam nang, cao nang, ca nang
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
va danh » va dinh, va hanh, dia danh
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam
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 sach) OR (thuat sach)) cap nang ma hoa. hieu ve cam xuc ((va danh) or (va dan)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) cap nang ma hoa. hieu ve cam xuc ((va danh) OR (va dan)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) cap nang ma hoa. hieu ve cam xuc ((va danh) or (va dan)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuat sach)) cap nang ma hoa. hieu ve cam xuc ((va danh) or (va dan)) vi cua te*.